BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN BEGIN:VEVENT SUMMARY:Heavy-flavor production in PbPb collisions at the LHC measured wit h the ALICE detector DTSTART;VALUE=DATE-TIME:20110527T072500Z DTEND;VALUE=DATE-TIME:20110527T075000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-199@cern.ch DESCRIPTION:Speakers: DAINESE\, Andrea (INFN Padova)\nThe ALICE experiment studies nucleus–nucleus collisions at the LHC in order to investigate t he properties of QCD matter at extreme energy densities. The measurement o f open charm and open beauty production allows to investigate the mechanis ms of heavy-quark propagation\, energy loss and hadronization in the hot a nd dense medium formed in high-energy nucleus-nucleus collisions. In parti cular\, in-medium energy loss is predicted to be different for massless pa rtons (light quarks and gluons) and heavy quarks at moderate momentum.\nTh e ALICE apparatus allows us to measure open heavy-flavour particles in sev eral decay channels and with a wide phase-space coverage.\nWe present the first results on the nuclear modification factors for heavy flavour partic le production in Pb–Pb collisions at psNN = 2.76 TeV.\nUsing proton–pr oton and lead–lead collision samples at ps = 7 TeV and psNN = 2.76 TeV\, respectively\, recorded during 2010\, nuclear modification factors RAA(pt ) were measured for D mesons at central rapidity (via displaced decay vert ex reconstruction)\, and for electrons and muons from heavy flavour decays \, at central and forward rapidity\, respectively.\n\nhttp://indico.cern.c h/contributionDisplay.py?contribId=199&sessionId=59&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=199&sessionId=5 9&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Common discussion with 4 speakers DTSTART;VALUE=DATE-TIME:20110525T102500Z DTEND;VALUE=DATE-TIME:20110525T104500Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-198@cern.ch DESCRIPTION:Speakers: JACOBS\, Peter (Lawrence Berkeley National Laborator y)\nhttp://indico.cern.ch/contributionDisplay.py?contribId=198&sessionId=2 0&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=198&sessionId=2 0&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Spectra\, flow and HBT in PbPb collisons at the LHC DTSTART;VALUE=DATE-TIME:20110523T142000Z DTEND;VALUE=DATE-TIME:20110523T144000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-345@cern.ch DESCRIPTION:Speakers: BOZEK\, Piotr (IFJ PAN Krakow/ Rzeszow University)\n The expansion of the fireball created in Pb-Pb collisions at $\\sqrt{s}=2. 76$TeV is modelled using the relativistic viscous hydrodynamics. The expe rimentally observed interferometry radii are well reproduced. The recent data of the ALICE Collaboration on the elliptic flow as function of the ce ntrality can be very well described using the hydrodynamic expansion of a fluid with a small shear viscosity $\\eta/s=0.08$. The elliptic flow as f unction of the transverse momentum shows systematic deviations from a hydr odynamic behavior in the small momenta region $p_\\perp\n\nhttp://indico.c ern.ch/contributionDisplay.py?contribId=345&sessionId=45&confId=30248 LOCATION:Imperial Palace Salle de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=345&sessionId=4 5&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Jet quenching and elliptic flow in heavy ion collisions at RHIC an d LHC within a pQCD-based partonic transport model DTSTART;VALUE=DATE-TIME:20110527T132000Z DTEND;VALUE=DATE-TIME:20110527T134000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-346@cern.ch DESCRIPTION:Speakers: FOCHLER\, Oliver (Institut für Theoretische Physik\ , Goethe-Universität Frankfurt)\nWe present fully dynamic simulations of heavy ion collisions at RHIC and at LHC energies within the perturbative Q CD-based partonic transport model BAMPS (Boltzmann Approach to Multi-Parto n Scatterings). We focus on the simultaneous investigation of high-pT obse rvables\, such as jet quenching\, and bulk observables\, such as the ellip tic flow. The model features inelastic 2 3 processes based on the Gunion- Bertsch matrix element and has recently been extended to include light qua rk degrees of freedom. This allows for direct comparison to hadronic data on the nuclear modification factor via a fragmentation scheme for high-pT partons and also allows for the discussion of elliptic flow results in ter ms of a quark recombination picture. We present results on the nuclear mod ification factor of neutral pions at different centralities for Au+Au coll isions at RHIC energies and compare to experimental data. First results on the nuclear modification of charged hadrons in central Pb+Pb collisions a t the LHC are also presented and compared to recent ALICE data. Furthermor e the differential elliptic flow of gluons and quarks as well as the centr ality dependence of the integrated elliptic flow is studied within the sam e framework for Au+Au at RHIC and Pb+Pb at LHC.\n\nhttp://indico.cern.ch/c ontributionDisplay.py?contribId=346&sessionId=66&confId=30248 LOCATION:Imperial Palace Salon Verdi AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=346&sessionId=6 6&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Dynamical $K/\\pi$\, $p/\\pi$\, and $K/p$ fluctuations in $\\sqrt{ s_{NN}}$ = 7.7-200 GeV Au+Au collisions DTSTART;VALUE=DATE-TIME:20110523T140000Z DTEND;VALUE=DATE-TIME:20110523T142000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-340@cern.ch DESCRIPTION:Speakers: TARNOWSKY\, Terence (Michigan State University)\nTer ence J Tarnowsky (for the STAR Collaboration)\n\nDynamical fluctuations in global conserved quantities such as baryon number\, strangeness\, or char ge may be observed near a QCD critical point. Results from new measurement s of dynamical $K/\\pi$\, $p/\\pi$\, and $K/p$ ratio fluctuations are pres ented. The commencing of a QCD critical point search at RHIC has extended the reach of possible measurements of dynamical $K/\\pi$\, $p/\\pi$\, and $K/p$ ratio fluctuations from Au+Au collisions to lower energies. \n\nThe STAR experiment has performed a comprehensive study of the energy dependen ce of these dynamical fluctuations in Au+Au collisions at the energies $\\ sqrt{s_{NN}}$ = 7.7\, 11.5\, 39\, 62.4\, and 200 GeV. New results are com pared to previous measurements and to theoretical predictions from several models. The measured dynamical $K/pi$ fluctuations are found to be indepe ndent of collision energy\, while dynamical $p/\\pi$ and $K/p$ fluctuation s have a negative value that increases toward zero at top RHIC energy.\n\n http://indico.cern.ch/contributionDisplay.py?contribId=340&sessionId=46&co nfId=30248 LOCATION:Imperial Palace Rotonde de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=340&sessionId=4 6&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Correlations and fluctuations from lattice QCD DTSTART;VALUE=DATE-TIME:20110523T165000Z DTEND;VALUE=DATE-TIME:20110523T171000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-342@cern.ch DESCRIPTION:Speakers: Dr. RATTI\, Claudia (Torino University)\nWe present the new results of the Wuppertal-Budapest lattice QCD collaboration on fla vor diagonal and non-diagonal quark number susceptibilities with 2+1 stagg ered quark flavors\, in a temperature regime between 120 and 500 MeV. A Sy manzik improved gauge and a stout-link improved staggered fermion action i s utilized\; the light and strange quark masses are set to their physical values. Lattices with N_t=6\,8\,10\,12 are used.\n\nhttp://indico.cern.ch/ contributionDisplay.py?contribId=342&sessionId=50&confId=30248 LOCATION:Imperial Palace Rotonde de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=342&sessionId=5 0&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Identified hadron production from the RHIC beam energy scan progra m in the STAR experiment DTSTART;VALUE=DATE-TIME:20110527T153000Z DTEND;VALUE=DATE-TIME:20110527T155000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-297@cern.ch DESCRIPTION:Speakers: Dr. KUMAR\, lokesh (Kent State University)\nA curren t focus at RHIC is the Beam Energy Scan (BES) program to study the QCD pha se diagram --- temperature ($T$) vs. baryon chemical potential ($\\mu_B$). The BES program aims to verify some predictions from QCD: that a cross-ov er occurs at $\\mu_B$ = 0\, and that there exists a first-order phase tran sition at large $\\mu_B$ and a critical point at an intermediate $\\mu_B$. The spectra and ratios of produced particles can be used to extract $T$ a nd $\\mu_B$ in different energies and system sizes.\n\nThe Solenoidal Trac ker At RHIC (STAR) experiment has collected data for Au+Au collisions at $ \\sqrt{s_{NN}}=$ 7.7 GeV\, 11.5 GeV\, and 39 GeV in year 2010. One of the advantages during the BES program was the enhanced particle identification with availability of full Time-Of-Flight detector. In addition\, STAR col lected Cu+Cu collisions at \n22.4 GeV in year 2005. We present mid-rapidit y spectra ($p_{T}$ or $m_{T}-m_{0}$)\, rapidity density\, average transver se mass\, and particle\nratios for identified hadrons from the STAR experi ment. The centrality and transverse momentum dependence of the particle yi elds and ratios will be compared to existing data at lower and higher beam energies and to various transport models like AMPT and UrQMD. Collision d ynamics are studied systematically in the framework of chemical and kineti c freeze-out and their properties extracted from the particle ratios and s pectra.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=297&sess ionId=72&confId=30248 LOCATION:Imperial Palace Salon Berlioz AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=297&sessionId=7 2&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Chirality\, magnetic field and parity violation in hot QCD matter DTSTART;VALUE=DATE-TIME:20110523T130000Z DTEND;VALUE=DATE-TIME:20110523T132000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-293@cern.ch DESCRIPTION:Speakers: Prof. KHARZEEV\, Dmitri (Stony Brook and BNL)\nAn ov erview of the recent progress in understanding the interplay of \nquantum anomalies\, chirality\, and magnetic field in the dynamics \nof QCD fluid will be presented. The current theoretical description \nof the chiral mag netic and chiral vortical effects within anomalous \nmagnetohydrodynamics will be described. It allows a quantitative \napproach to these phenomena in heavy ion collisions\, and \nthe first results from such studies will b e reviewed.\nThe existing and future experimental measurements needed to \ nestablish or refute the local violation of parity in hot QCD matter\nwill be discussed.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=2 93&sessionId=4&confId=30248 LOCATION:Imperial Palace Salon Ravel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=293&sessionId=4 &confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:D meson nuclear modification factors in PbPb collisions at $\\sqrt {s_{NN}}=2.76~{\\rm TeV}$\, measured with the ALICE detector DTSTART;VALUE=DATE-TIME:20110527T130000Z DTEND;VALUE=DATE-TIME:20110527T132000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-591@cern.ch DESCRIPTION:Speakers: Dr. ROSSI\, Andrea (Sezione di Padova (INFN)-Univers ita e INFN)\nThe comparison of heavy flavour production in proton-proton a nd heavy-ion collisions allows to probe the properties of the high-density QCD medium formed in the latter and to study the mechanism of in-medium p artonic energy loss. The ALICE experiment has measured the D meson product ion in pp and Pb--Pb collisions at the LHC at $\\sqrt{s}=7$ and $2.76~{\\r m TeV}$ and $\\sqrt{s_{NN}} = 2.76~{\\rm TeV}$ respectively\, via the excl usive reconstruction of hadronic decay channels. The D meson decay vertic es\, displaced by few hundred microns from the main interaction point\, ar e selected by exploiting the high-resolution tracking performance and the hadron identification capabilities of the ALICE detectors. The analyses of the ${\\rm D^{0} \\rightarrow K^{-}\\pi^{+}}$ and ${\\rm D^{+} \\rightarr ow K^{-}\\pi^{+}\\pi^{+}}$ channels will be described and the preliminary results for the ${\\rm D^{0}}$ and ${\\rm D^{+}}$ nuclear modification fac tor will be presented.\n\nhttp://indico.cern.ch/contributionDisplay.py?con tribId=591&sessionId=53&confId=30248 LOCATION:Imperial Palace Rotonde de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=591&sessionId=5 3&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Cold nuclear matter physics at low-x from d+Au collisions at PHENI X DTSTART;VALUE=DATE-TIME:20110526T134000Z DTEND;VALUE=DATE-TIME:20110526T140000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-597@cern.ch DESCRIPTION:Speakers: Dr. CHIU\, Mickey (Brookhaven National Lab)\nRHIC ex periments have observed that inclusive hadron yields in\nthe forward rapid ity (deuteron) direction for $\\sqrt{s_{NN}} = 200$\nGeV d+Au collisions a re suppressed relative to p+p collisions.\nThe mechanism for the suppressi on has not been firmly established\;\ntheoretical descriptions include nuc lear shadowing\, initial-state parton energy loss\, and gluon saturation. We present measurements by the PHENIX experiment at RHIC of di-hadron pai r production in d+Au\ncollisions where the particles in the pair are varie d across a wide\nrange of rapidity out to $|\\eta| = 3.8$ using a new forw ard electromagnetic calorimeter\, the MPC. These di-hadron measurements p robe down to parton momentum fractions x ~ $10^{-3}$ in the gold nucleus\, where the interesting possibility of observing gluon saturation effects a t RHIC is the greatest. Our measurements show that the correlated yield o f back-to-back pairs in d+Au collisions is suppressed by up to an order of magnitude relative to p+p collisions\, and increases with greater nuclear path thickness and with decreasing parton x in the Au nucleus.\n\nhttp:// indico.cern.ch/contributionDisplay.py?contribId=597&sessionId=62&confId=30 248 LOCATION:Imperial Palace Rotonde de l'Europe (150) URL:http://indico.cern.ch/contributionDisplay.py?contribId=597&sessionId=6 2&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Common discussion with 4 speakers DTSTART;VALUE=DATE-TIME:20110525T080000Z DTEND;VALUE=DATE-TIME:20110525T082000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-195@cern.ch DESCRIPTION:Speakers: GYULASSY\, Miklos (Columbia University)\nhttp://indi co.cern.ch/contributionDisplay.py?contribId=195&sessionId=19&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=195&sessionId=1 9&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Recent R_{AA} Results from the PHENIX Experiment DTSTART;VALUE=DATE-TIME:20110525T072000Z DTEND;VALUE=DATE-TIME:20110525T073500Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-194@cern.ch DESCRIPTION:Speakers: Dr. PURSCHKE\, Martin (BROOKHAVEN NATIONAL LABORATOR Y)\nhttp://indico.cern.ch/contributionDisplay.py?contribId=194&sessionId=1 9&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=194&sessionId=1 9&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:ATLAS jet measurements DTSTART;VALUE=DATE-TIME:20110525T100000Z DTEND;VALUE=DATE-TIME:20110525T102500Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-197@cern.ch DESCRIPTION:Speakers: COLE\, Brian (Physics Dept.\, Pupin Physics Lab.-Col umbia University-Unknown)\nhttp://indico.cern.ch/contributionDisplay.py?co ntribId=197&sessionId=20&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=197&sessionId=2 0&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Jet measurements by the CMS experiment in pp and PbPb collisions DTSTART;VALUE=DATE-TIME:20110525T093500Z DTEND;VALUE=DATE-TIME:20110525T100000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-196@cern.ch DESCRIPTION:Speakers: Dr. ROLAND\, Christof (Massachusetts Institute of Te chnology)\nThe energy loss of fast partons traversing the strongly interac ting matter\nproduced in high-energy nuclear collisions is one of the most interesting\nobservables to probe the nature of the produced medium. The multipurpose\nCompact Muon Solenoid (CMS) detector is well designed to mea sure these hard\nscattering processes with its high resolution calorimeter s and high precision\nsilicon tracker. Analyzing data from pp and PbPb col lisions at a center-of-mass\nenergy of 2.76 TeV parton energy loss is obse rved as a significant imbalance of\ndijet transverse momentum. To gain fur ther understanding of the parton energy\nloss mechanism the redistribution of the quenched jet energy was studied using\nthe transverse momentum bal ance of charged tracks projected onto the direction\nof the leading jet. I n contrast to pp collisions\, a large fraction the momentum\nbalance for a symmetric jets is found to be carried by low momentum particles at\nlarge angular distance to the jet axis. Further the fragmentation functions for\ nleading and subleading jets were reconstructed and are compared to model\ ncalculations and measurements in pp collisions. The results confirm and\n complement earlier CMS results based on calorimeter jets and yield a detai led\npicture of parton propagation in the hot QCD medium.\n\nhttp://indico .cern.ch/contributionDisplay.py?contribId=196&sessionId=20&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=196&sessionId=2 0&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Collective flow measurements from the PHENIX Experiment DTSTART;VALUE=DATE-TIME:20110524T084500Z DTEND;VALUE=DATE-TIME:20110524T090500Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-191@cern.ch DESCRIPTION:Speakers: ESUMI\, Shinichi (Institute of Physics - University of Tsukuba)\nRecent collective flow measurements including higher moment\n event anisotropy from the PHENIX experiment will be presented\,\nthe parti cle type\, beam energy dependence and the relation with\njet modification will be discussed.\n\nhttp://indico.cern.ch/contributionDisplay.py?contrib Id=191&sessionId=9&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=191&sessionId=9 &confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:ATLAS flow DTSTART;VALUE=DATE-TIME:20110524T092500Z DTEND;VALUE=DATE-TIME:20110524T094500Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-190@cern.ch DESCRIPTION:Speakers: JIA\, Jiangyong (Brookhaven National Laboratory (BNL )- Stony Brook University)\nhttp://indico.cern.ch/contributionDisplay.py?c ontribId=190&sessionId=9&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=190&sessionId=9 &confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Nuclear modification factors from the CMS experiment DTSTART;VALUE=DATE-TIME:20110525T065500Z DTEND;VALUE=DATE-TIME:20110525T072000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-193@cern.ch DESCRIPTION:Speakers: LEE\, Yen-Jie (Massachusetts Inst. of Technology (MI T))\nWe report the measurement of transverse momentum spectra of the charg ed hadrons and photons in √sNN = 2.76 TeV PbPb collisions with the CMS d etector. The nuclear modification factors are constructed by dividing the PbPb pT spectra\,\nnormalized to the number of binary collisions\, by the pp references.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=1 93&sessionId=19&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=193&sessionId=1 9&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Common discussion with 4 experimental speakers DTSTART;VALUE=DATE-TIME:20110524T101000Z DTEND;VALUE=DATE-TIME:20110524T103500Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-192@cern.ch DESCRIPTION:Speakers: HEINZ\, Ulrich (Ohio State University)\nhttp://indic o.cern.ch/contributionDisplay.py?contribId=192&sessionId=9&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=192&sessionId=9 &confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Open charm hadron measurement in pp and Au+Au collisions at $\\sqr t{s}$ = 200 GeV in STAR DTSTART;VALUE=DATE-TIME:20110527T140000Z DTEND;VALUE=DATE-TIME:20110527T142000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-273@cern.ch DESCRIPTION:Speakers: Dr. ZHANG\, Yifei (Lawrence Berkeley National Lab)\n Heavy quark production in elementary particle collisions are expected to\n be calculable in pQCD. In relativistic heavy ion collisions\, heavy\nquark s are believed to be an ideal probe to study the properties of the\ncreate d QCD medium. Early RHIC measurements were carried out mostly via\nsemi-le ptonic decay electrons. There are limitations in the electron\napproach: t he charm hadron and electron kinematics are only weakly\ncorrelated due to the decay\, and measured electrons have mixed\ncontributions from various charm/bottom hadrons. Thus direct measurement\nof charm hadrons via hadro nic decays is crucial to better understand\ncharm-medium interactions at R HIC.\n\nIn this talk\, we will present the STAR preliminary results of D0 and D*\nin year 2009 p+p and D0 in year 2010 Au+Au collisions via hadronic decays\ncovering $p_T$ from 0.4 to 6 GeV/c in mid-rapidity |y|\n\nhttp:// indico.cern.ch/contributionDisplay.py?contribId=273&sessionId=53&confId=30 248 LOCATION:Imperial Palace Rotonde de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=273&sessionId=5 3&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Determination of relaxation times at weak and strong coupling DTSTART;VALUE=DATE-TIME:20110527T134000Z DTEND;VALUE=DATE-TIME:20110527T140000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-276@cern.ch DESCRIPTION:Speakers: Prof. RISCHKE\, Dirk (Institut fur Theoretische Phys ik\, Goethe University\, and Frankfurt Institute for Advanced Studies (FIA S)\, 60438 Frankfurt am Main\, Germany)\nUsing linear response theory\, we derive [1] conditions for the retarded Green's function so that the linea rized equation of motion of a dissipative current is reduced to a relaxati on-type equation of the Israel-Stewart type [2]. We prove that this reduct ion can be done\, if the singularity of the retarded Green's function clos est to the origin is a simple pole on the imaginary axis. The relaxation t ime coefficient is then given by the location of this pole in the complex plane. This implies that previous attempts to derive the relaxation time f rom the generic long-wavelength\, low-frequency (i.e.\, fluid-dynamical) l imit of the retarded Green's function\, via an expansion in terms of gradi ents of the fluid-dynamical variables\, in general fail to give the correc t result.\n\nFor a dilute gas\, this prescription gives a value for the sh ear relaxation time that\, under certain simplifying assumptions\, coincid es with the one derived by matching relativistic fluid dynamics to kinetic theory [3]. This shows that transient fluid dynamics is determined by the slowest microscopic and not by the fastest fluid-dynamical time scale. Th is has important implications for the description of the collective motion of matter formed in ultrarelativistic heavy-ion collisions\, where micros copic time scales and the lifetime of the system itself can be of the sam e order. We also prove that the long-wavelength dynamics of the shear str ess tensor in a strongly coupled N=4 SYM plasma is not described by relaxa tion-type equations as in Israel-Stewart theory [2].\n\n[1] G. S. Denicol\ , J. Noronha\, H. Niemi\, and D. H. Rischke\,\naccepted for publication in Phys. Rev. D\; G. S. Denicol\, H. Niemi\,\nJ. Noronha\, D. H. Rischke\, [ arXiv:1103.2476 [hep-th]].\n\n[2] W. Israel and J. M. Stewart\, Phys. Lett . 58 A\, 213\n(1976)\; Ann. Phys. (N.Y.) 118\, 341 (1979).\n\n[3] G. S. De nicol\, T. Koide\, and D. H. Rischke\, Phys. Rev.\nLett. 105\, 162501 (201 0).\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=276&sessionI d=85&confId=30248 LOCATION:Imperial Palace Salon Berlioz AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=276&sessionId=8 5&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Dielectron Continuum Production from $\\sqrt{s_{NN}}$ = 200 GeV pp and Au+Au collisions at STAR DTSTART;VALUE=DATE-TIME:20110526T134000Z DTEND;VALUE=DATE-TIME:20110526T140000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-277@cern.ch DESCRIPTION:Speakers: ZHAO\, Jie (SINAP/LBNL)\nDilepton distributions have been proposed as one of the penetrating probes for hot and dense nuclear matter created in high-energy nuclear collisions. Due to their relatively small final-state interaction cross-sections with the hot/dense environmen t\, dileptons bring us direct information of the created matter in such co llision. Since dileptons are created over all stages of heavy ion reaction s\, their sources vary as a function of kinematics. In the low mass region (LMR: mass 3 GeV/$c^{2}$)\, dileptons are mostly contributed by heavy (ch arm and bottom) quark decays and Drell-Yan processes. As a result\, the di lepton distributions\, especially in the IMR and HMR\, could provide new a spects of early collision dynamics in heavy ion collisions.\n\nWith the co mpletion of the full barrel time-of-flight detector\, the electron identif ication has been significantly improved at STAR\, especially in low moment um region. In this talk we will present the first STAR results on dielectr on production in p+p and Au+Au collisions at $\\sqrt{s_{NN}}$ = 200 GeV. T he results will be compared to hadron decay cocktails to search for vector meson in-medium modifications in LMR and the QGP thermal radiation in IMR . A systematic analysis of the transverse mass distributions in IMR region as a function of the mass in Au+Au collisions will be discussed. The resu lts will be compared to those from 200 GeV p+p collisions as well as the r esults from SPS energies.\n\nhttp://indico.cern.ch/contributionDisplay.py? contribId=277&sessionId=71&confId=30248 LOCATION:Imperial Palace Salon Ravel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=277&sessionId=7 1&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Observation of the antimatter helium-4 nucleus DTSTART;VALUE=DATE-TIME:20110523T130000Z DTEND;VALUE=DATE-TIME:20110523T132000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-278@cern.ch DESCRIPTION:Speakers: XUE\, Liang (SINAP/BNL)\nWe present the observation of the antimatter $^{4}He$ nucleus\, the heaviest observed antinucleus. Th e identification and measurement of anti-$^{4}He$ relies on the mean energ y loss per unit track length\, the time of flight of particles\, and their curvature in the magnetic field of the STAR detector. Another essential detector capability was the High Level online tracking Trigger (HLT)\, whi ch helps to cope with the large data volume and greatly speeds up the sear ch effort.\nIn total\, 18 anti-$^{4}He$ counts were detected at the STAR e xperiment at RHIC in $10^{9}$ recorded Au+Au collisions at beam energies o f $\\sqrt{s_{NN}}$ = 200 GeV and 62 GeV. Misidentification probability is estimated to be below $10^{-11}$. \nThe invariant differential cross secti on is consistent with expectations from thermodynamic and coalescent nucle osynthesis models\, which has implications for future production of even h eavier antimatter nuclei\, as well as for experimental searches for new ph enomena in the cosmos. The yield of the stable antinucleus next in line (m ass number = 6) is predicted to be down by a factor of $2.6 X 10^{6}$ comp ared to anti-$^{4}He$ and is beyond the reach of current accelerator techn ology.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=278&sessi onId=6&confId=30248 LOCATION:Imperial Palace Salon Haendel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=278&sessionId=6 &confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:PHENIX measurements of higher-order flow harmonics in Au+Au collis ions at $\\sqrt{s_{NN}}=200$ GeV: implications for Initial-eccentricity mo dels and the specific viscosity of the Quark Gluon Plasma DTSTART;VALUE=DATE-TIME:20110523T163000Z DTEND;VALUE=DATE-TIME:20110523T165000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-526@cern.ch DESCRIPTION:Speakers: Prof. LACEY\, Roy (Stony Brook University)\nThe high er-order flow harmonics $v_n$ can provide constraints crucial for precisio n extraction of the specific shear viscosity eta/s\, of the plasma (QGP) p roduced in full energy ($\\sqrt{s_{NN}}=200$ GeV) Au+Au collisions at RHIC . It can also provide reliable estimates of the flow correlations which co ntribute to the underlying event for jet-driven two-particle azimuthal ang le correlation studies\; the latter is important to the development of a q uantitative understanding of the opacity of the QGP. Thus\, significant re cent attention has been given to theoretical studies of $v_n$ (odd and ev en) and the associated initial [fluctuating] eccentricities which drive $v _n$. \n In recent experiments\, the PHENIX Collaboration has made \ndetai led differential measurements of $v_n$ (odd and even) relative \nto the pa rticipant event planes $\\Psi_n$\, as well as measurements of the correlat ions between different $\\Psi_n$ planes. The results from these measuremen ts will be presented. Comparisons to LHC data and hydrodynamical calculati ons will be shown as appropriate. We will also discuss the detailed implic ations of these measurements for (i) improved precision for separating the flow and jet-driven contributions to $\\Delta\\Phi$ correlation functions \, (ii) distinguishing between the two leading eccentricity models\, and ( iii) a more constrained estimate of $\\eta/s$.\n\nhttp://indico.cern.ch/co ntributionDisplay.py?contribId=526&sessionId=49&confId=30248 LOCATION:Imperial Palace Salle de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=526&sessionId=4 9&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Midrapidity charged particle directed flow in PbPb collisions at s qrt{s_{NN}} = 2.76 TeV measured with ALICE at the LHC DTSTART;VALUE=DATE-TIME:20110527T142000Z DTEND;VALUE=DATE-TIME:20110527T144000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-521@cern.ch DESCRIPTION:Speakers: Dr. SELYUZHENKOV\, Ilya (EMMI/GSI)\nAzimuthal anisot ropic flow is a key observable indicating collectivity among particles pro duced in non-central heavy ion collisions. Directed flow is characterized by the first harmonic coefficient in the Fourier decomposition of the part icle azimuthal distribution with respect to the collision reaction plane. It develops at a very early stage of the collision and thus is sensitive t o the properties and the equation of state of the hot and dense matter pro duced in ion-ion collisions.\n\nWe report on results for midrapidity (|eta |\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=521&sessionId= 67&confId=30248 LOCATION:Imperial Palace Salons Ravel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=521&sessionId=6 7&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Event-by-event mean $p_{T}$ fluctuations in pp and PbPb collisions measured by the ALICE experiment at the LHC DTSTART;VALUE=DATE-TIME:20110524T142000Z DTEND;VALUE=DATE-TIME:20110524T144000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-523@cern.ch DESCRIPTION:Speakers: HECKEL\, Stefan (Johann-Wolfgang-Goethe Univ.)\nNon- statistical event-by-event fluctuations of the mean transverse momentum of charged particles in pp and Pb--Pb collisions are studied using the ALICE experiment at the LHC. The analysis is performed at $|\\eta| \n\nhttp://i ndico.cern.ch/contributionDisplay.py?contribId=523&sessionId=52&confId=302 48 LOCATION:Imperial Palace Rotonde de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=523&sessionId=5 2&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Charmonium production measured in PbPb and pp collisions by CMS DTSTART;VALUE=DATE-TIME:20110524T130000Z DTEND;VALUE=DATE-TIME:20110524T132000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-449@cern.ch DESCRIPTION:Speakers: DAHMS\, Torsten (LLR - Ecole Polytechnique\, IN2P3-C NRS)\nCMS is fully equipped to measure hard probes in the di-muon decay ch annel in the high multiplicity environment of nucleus-nucleus collisions. Such probes are especially relevant for studying the quark gluon plasma si nce they are produced at early times and propagate through the medium\, ma pping its evolution. In particular\, the $J\\psi$ production in heavy ion collisions has been studied at different energies and with different colli sion systems without yet giving a global picture that is fully understood. Measuring the charmonium production at the LHC energies in PbPb collision s will help constraining predictions\, in particular those expecting high recombination of prompt J$/\\jpsi$s or suppression in hot medium. We will review CMS J/\\psi measurements in pp collisions at $\\sqrt{s_{NN}}=7$~TeV \, which allow precision studies of quarkonia production and serve as a re ference for the observation of hot nuclear effects. CMS is able to disting uish non-prompt J$/\\psi$ from prompt J/$\\psi$ in PbPb collisions\, and w ill present the prompt J/$\\psi$ production cross-section in PbPb inclusiv ely and as a function of transverse momentum\, rapidity and number of nucl eons participating in the collision. Finally\, we compare the B fraction m easured in PbPb collisions with that measured in pp at various energies.\n \nhttp://indico.cern.ch/contributionDisplay.py?contribId=449&sessionId=63& confId=30248 LOCATION:Imperial Palace Salon Ravel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=449&sessionId=6 3&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Jet reconstruction with particle flow in heavy-ion collisions with CMS DTSTART;VALUE=DATE-TIME:20110527T130000Z DTEND;VALUE=DATE-TIME:20110527T132000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-448@cern.ch DESCRIPTION:Speakers: NGUYEN\, Matthew (CERN)\nIn the particle-flow approa ch one attempts to combine information from all available sub-detector sys tems to reconstruct all stable particles. Such an event reconstruction has been shown to improve the resolution of jets and missing transverse energ y in pp collisions compared to purely calorimetric measurements. This is a chieved primarily by combining the precise momentum determination of charg ed hadrons in the silicon tracker with the associated energy depositions i n the calorimeters. By resolving individual particles inside jets\, partic le flow reduces the sensitivity of the jet energy scale to the jet fragmen tation pattern\, which is one of the largest sources of systematic uncerta inty in jet reconstruction. Particle flow is thus an attractive tool for t he study of potential modifications to jet fragmentation in heavy-ion coll isions. The particle flow algorithm has been adapted to the heavy-ion envi ronment. The performance of jet reconstruction from particle flow objects in PbPb collisions using the anti-kT jet reconstruction algorithm will be presented.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=448&s essionId=66&confId=30248 LOCATION:Imperial Palace Salon Verdi AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=448&sessionId=6 6&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Measurement of inclusive isolated photons in PbPb collisions with CMS DTSTART;VALUE=DATE-TIME:20110527T153000Z DTEND;VALUE=DATE-TIME:20110527T155000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-442@cern.ch DESCRIPTION:Speakers: KIM\, Yong (Massachusetts Inst. of Technology (MIT) Heacy Ion group (CMS))\nIn studies of the dense medium produced in ultra- relativistic heavy ion collisions\, photons are important hard probes\, si nce they are not expected to be modified by the medium. The measurement of isolated prompt photon production in PbPb collisions provides a test of p erturbative quantum chromodynamics (pQCD) and the information to constrain the nuclear parton distribution functions. CMS has shown excellent isolat ion capabilities in pp collisions at the LHC using the shower shape method . \n\nIn heavy-ion collisions\, two independent methods\, shower shape and isolation\, are used to separate isolated photons from non-prompt photons . This is the first application of these pp photon isolation techniques in heavy ion collisions. Shower shape templates are created with studies of the response in the electromagnetic calorimeter. The latter method\, based on the tracker and the calorimeter\, is found to have consistent results with the former method. We report the first measurement of the transverse momentum spectra of isolated photons in PbPb collisions at a center-of-mas s energy of 2.76 TeV per nucleon nucleon pair with the CMS detector. The r esults are compared to NLO calculations at an energy of 2.76 TeV. The cent rality dependence of the nuclear modification factor will be reported for isolated prompt photons with pT from 20 GeV/c to more than 80 GeV/c.\n\nht tp://indico.cern.ch/contributionDisplay.py?contribId=442&sessionId=76&conf Id=30248 LOCATION:Imperial Palace Salon Haendel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=442&sessionId=7 6&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Centrality and transverse momentum dependence of the nuclear modif ication of charged particle spectra in PbPb collisions at 2.76 TeV from CM S DTSTART;VALUE=DATE-TIME:20110526T142000Z DTEND;VALUE=DATE-TIME:20110526T144000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-441@cern.ch DESCRIPTION:Speakers: YOON\, Andre (Massachusetts Inst. of Technology (MIT ))\nThe nuclear modification factor R_AA is one of the key signatures for the energy loss of fast partons traversing a QCD medium. Charged particle transverse momentum (pT) spectra have been measured by CMS for pp collisio ns at sqrt(s)=0.9 and 7 TeV\, corresponding to integrated luminosities of 231 ub-1 and 2.96 pb-1\, respectively. Calorimeter-based high-transverse-e nergy jet triggers are employed to enhance the statistical reach of the hi gh-pT measurements. The results are compared to various generator tunes an d also to an empirical scaling of different collision energies with xT=2pT /sqrt(s) over the pT range up to 200 GeV/c. Using a combination of xT scal ing and direct interpolation at fixed pT\, a reference pT spectrum at sqrt (s)=2.76 TeV is constructed from pT = 1-100 GeV/c with less than 13% syste matic uncertainty. We have obtained R_AA in bins of collision centrality f or a PbPb data sample with an integrated luminosity of 7 ub-1\, dividing b y the interpolated reference spectrum. As seen at lower energies\, the cha rged particle spectrum in central PbPb collisions is suppressed by at leas t a factor of five (R_AA \n\nhttp://indico.cern.ch/contributionDisplay.py? contribId=441&sessionId=61&confId=30248 LOCATION:Centre Bonlieu Salle de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=441&sessionId=6 1&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Weak boson production measured in PbPb and pp by CMS DTSTART;VALUE=DATE-TIME:20110526T130000Z DTEND;VALUE=DATE-TIME:20110526T132000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-440@cern.ch DESCRIPTION:Speakers: ROBLES\, Jorge A (University of California (UCD))\nT he unprecedented centre-of-mass energy available at the LHC offers unique opportunities for studying the properties of the strongly-interacting QCD matter created in PbPb collisions at extreme temperatures and very low par ton momentum fractions. With its high precision\, large acceptance for tra cking and calorimetry\, and a trigger scheme that allows the analysis of a lmost each minimum bias PbPb event by the high-level trigger\, CMS is full y equipped to measure muons and electrons in the high multiplicity environ ment of nucleus-nucleus collisions. Electroweak boson production is an imp ortant benchmark process at hadron colliders. Precise measurements of Z pr oduction in heavy-ion collisions can help to constrain nuclear PDFs as wel l as serve as a standard candle of the initial state in PbPb collisions at the LHC energies. The inclusive and differential measurements of the Z bo son yield in the muon decay channel will be presented\, establishing that no modification is observed with respect to next-to-leading order pQCD cal culations\, scaled by the number of incoherent nucleon-nucleon collisions. The status of the Z measurement in the electron decay channel\, as well a s the first observation of W→μν in heavy ion collisions will be given. The heavy-ion results will be presented in the context of those obtained in pp collisions with the CMS detector.\n\nhttp://indico.cern.ch/contribut ionDisplay.py?contribId=440&sessionId=71&confId=30248 LOCATION:Imperial Palace Salon Ravel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=440&sessionId=7 1&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Monte-Carlo simulation for elastic energy loss of high-energy part ons in a hydrodynamical background DTSTART;VALUE=DATE-TIME:20110527T163000Z DTEND;VALUE=DATE-TIME:20110527T165000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-447@cern.ch DESCRIPTION:Speakers: Mr. AUVINEN\, Jussi (University of Jyväskylä)\nWe examine the significance of elastic collisions as the suppression mechanis m of high-energy partons in the strongly interacting medium formed in ultr arelativistic heavy ion collisions. For this purpose\, we have developed a Monte Carlo simulation describing the interactions of perturbatively prod uced\, non-eikonally propagating high-energy partons with the quarks and g luons from the expanding QCD medium. The partonic collision rates are comp uted in leading-order perturbative QCD\, while three different hydrodynami cal scenarios are used to model the QCD medium: (1+1)-dimensional hydro wi th initial conditions from the EKRT model for central heavy ion collisions \, (2+1)-dimensional hydro with a smooth sWN profile obtained from the opt ical Glauber model for non-central collisions\, and event-by-event hydro w ith an eBC profile from the Monte Carlo Glauber model to study the initial state fluctuation effects.\n\nWe compare our results with the neutral pio n suppression observed in sqrt(s_NN)=200 GeV Au+Au collisions at the BNL-R HIC. We find the incoherent nature of elastic energy loss incompatible wit h the measured data. Also the effect of the initial state fluctuations app ears to be negligible.\n\nhttp://indico.cern.ch/contributionDisplay.py?con tribId=447&sessionId=74&confId=30248 LOCATION:Imperial Palace Salon Verdi AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=447&sessionId=7 4&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Dijet fragmentation functions measured in PbPb collisions with CMS DTSTART;VALUE=DATE-TIME:20110527T153000Z DTEND;VALUE=DATE-TIME:20110527T155000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-445@cern.ch DESCRIPTION:Speakers: YILMAZ\, Yetkin (Massachusetts Inst. of Technology ( MIT))\nThe energy loss of fast partons traversing the strongly interacting matter produced in high-energy nuclear collisions is one of the most inte resting observables to probe the nature of the produced medium. Analyzing data from PbPb collisions at a center-of-mass energy of 2.76 TeV\, recorde d with the Compact Muon Solenoid (CMS) detector\, parton energy loss is ob served as a significant imbalance of dijet transverse momentum. To gain fu rther understanding of the parton energy loss mechanism and how it manifes ts itself in the distribution of final state particles\, parton fragmentat ion functions are studied for the leading and subleading jet in bins of ce ntrality and dijet imbalance. \n\nDijets are reconstructed using the anti- kT jet algorithm\, with the particle flow method of event reconstruction. Particle flow\, which is applied to heavy-ion collisions for the first tim e in this measurement\, allows for improved jet reconstruction by combinin g track and calorimeter information at the particle level. The fragmentati on functions for leading and subleading jets are compared to model calcula tions and measurements in pp collisions. The results confirm and complemen t earlier CMS results based on calorimeter jets and yield a detailed pictu re of parton propagation in the hot QCD medium.\n\nhttp://indico.cern.ch/c ontributionDisplay.py?contribId=445&sessionId=74&confId=30248 LOCATION:Imperial Palace Salon Verdi AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=445&sessionId=7 4&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Study of jet quenching using dijets in PbPb Collisions with CMS DTSTART;VALUE=DATE-TIME:20110524T130000Z DTEND;VALUE=DATE-TIME:20110524T132000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-444@cern.ch DESCRIPTION:Speakers: TONJES\, Marguerite Belt (University of Maryland)\nJ ets are an important tool to probe the hot\, dense medium that is produced in ultra-relativistic heavy ion collisions. The large collision energy at the LHC provides copious production of dijets with energies that can be c leanly identified above the heavy ion background. The multipurpose Compact Muon Solenoid (CMS) detector is well designed to measure these hard scatt ering processes with its high resolution calorimeters and high precision s ilicon tracker. Jet quenching was observed by a significant imbalance of d ijet transverse momentum in PbPb collisions at a center-of-mass energy of = 2.76 TeV. The fraction of unbalanced dijets is found to increase strongl y with increasing collision centrality. The dijet imbalance persists to th e highest jet momenta studied\, while angular distributions are only weakl y modified. The redistribution of the quenched jet energy was studied usin g the transverse momentum balance of charged tracks projected onto the dir ection of the leading jet. In contrast to pp collisions\, a large fraction of the momentum balance for asymmetric jets is found to be carried by low momentum particles at large angular distance to the jet axis.\n\nhttp://i ndico.cern.ch/contributionDisplay.py?contribId=444&sessionId=51&confId=302 48 LOCATION:Imperial Palace Salle de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=444&sessionId=5 1&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Initial conditions\, low-x QCD\, thermalization DTSTART;VALUE=DATE-TIME:20110522T120000Z DTEND;VALUE=DATE-TIME:20110522T121500Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-108@cern.ch DESCRIPTION:Speakers: D'ENTERRIA\, David (CERN)\nhttp://indico.cern.ch/con tributionDisplay.py?contribId=108&sessionId=91&confId=30248 LOCATION:Imperial Palace Salle de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=108&sessionId=9 1&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:QCD phase transition\, hydrodynamics\, hadronization DTSTART;VALUE=DATE-TIME:20110522T121500Z DTEND;VALUE=DATE-TIME:20110522T123000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-109@cern.ch DESCRIPTION:Speakers: Dr. CHRISTAKOGLOU\, Panos (NIKHEF - Utrecht Universi ty)\nhttp://indico.cern.ch/contributionDisplay.py?contribId=109&sessionId= 91&confId=30248 LOCATION:Imperial Palace Salle de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=109&sessionId=9 1&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:LHC accelerator DTSTART;VALUE=DATE-TIME:20110523T063000Z DTEND;VALUE=DATE-TIME:20110523T070000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-102@cern.ch DESCRIPTION:Speakers: MYERS\, Steve (CERN)\nhttp://indico.cern.ch/contribu tionDisplay.py?contribId=102&sessionId=3&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=102&sessionId=3 &confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Theory overview DTSTART;VALUE=DATE-TIME:20110523T070000Z DTEND;VALUE=DATE-TIME:20110523T073000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-103@cern.ch DESCRIPTION:Speakers: Prof. RAJAGOPAL\, Krishna (MIT)\nhttp://indico.cern. ch/contributionDisplay.py?contribId=103&sessionId=3&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=103&sessionId=3 &confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:STAR highlights DTSTART;VALUE=DATE-TIME:20110523T090500Z DTEND;VALUE=DATE-TIME:20110523T093000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-100@cern.ch DESCRIPTION:Speakers: MASUI\, Hiroshi (LBNL)\nhttp://indico.cern.ch/contri butionDisplay.py?contribId=100&sessionId=3&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=100&sessionId=3 &confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Opening DTSTART;VALUE=DATE-TIME:20110523T073000Z DTEND;VALUE=DATE-TIME:20110523T081000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-101@cern.ch DESCRIPTION:Speakers: \nhttp://indico.cern.ch/contributionDisplay.py?contr ibId=101&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=101&confId=3024 8 END:VEVENT BEGIN:VEVENT SUMMARY:Jets\, high-pT hadrons and prompt photons DTSTART;VALUE=DATE-TIME:20110522T090000Z DTEND;VALUE=DATE-TIME:20110522T094000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-106@cern.ch DESCRIPTION:Speakers: VAN LEEUWEN\, Marco (Utrecht University)\nhttp://ind ico.cern.ch/contributionDisplay.py?contribId=106&sessionId=89&confId=30248 LOCATION:Imperial Palace Salle de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=106&sessionId=8 9&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Heavy-quarks and quarkonia DTSTART;VALUE=DATE-TIME:20110522T094000Z DTEND;VALUE=DATE-TIME:20110522T102000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-107@cern.ch DESCRIPTION:Speakers: ARNALDI\, Roberta (Universita degli Studi di Torino) \nhttp://indico.cern.ch/contributionDisplay.py?contribId=107&sessionId=89& confId=30248 LOCATION:Imperial Palace Salle de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=107&sessionId=8 9&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Heavy-ion collisions and QCD: the big picture DTSTART;VALUE=DATE-TIME:20110522T070000Z DTEND;VALUE=DATE-TIME:20110522T075000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-104@cern.ch DESCRIPTION:Speakers: GELIS\, Francois (IPhT Saclay)\nhttp://indico.cern.c h/contributionDisplay.py?contribId=104&sessionId=89&confId=30248 LOCATION:Imperial Palace\, Annecy Salle de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=104&sessionId=8 9&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Soft physics and hydrodynamics DTSTART;VALUE=DATE-TIME:20110522T075000Z DTEND;VALUE=DATE-TIME:20110522T083000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-105@cern.ch DESCRIPTION:Speakers: ROMATSCHKE\, Paul (Frankfurt Institute for Advanced Studies)\nhttp://indico.cern.ch/contributionDisplay.py?contribId=105&sessi onId=89&confId=30248 LOCATION:Imperial Palace\, Annecy Salle de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=105&sessionId=8 9&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Fluctuations & correlations – TH perspective DTSTART;VALUE=DATE-TIME:20110526T085000Z DTEND;VALUE=DATE-TIME:20110526T091500Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-641@cern.ch DESCRIPTION:Speakers: LUZUM\, Matthew (IPhT CEA/Saclay)\nhttp://indico.cer n.ch/contributionDisplay.py?contribId=641&sessionId=37&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=641&sessionId=3 7&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Common discussion with 4 speakers DTSTART;VALUE=DATE-TIME:20110526T080000Z DTEND;VALUE=DATE-TIME:20110526T082000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-640@cern.ch DESCRIPTION:Speakers: Prof. REDLICH\, Krzysztof (University of Wroclaw\, I nstitute of Theoretical Physics)\nhttp://indico.cern.ch/contributionDispla y.py?contribId=640&sessionId=37&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=640&sessionId=3 7&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Results from correlation studies in ALICE DTSTART;VALUE=DATE-TIME:20110526T094000Z DTEND;VALUE=DATE-TIME:20110526T100000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-642@cern.ch DESCRIPTION:Speakers: GROSSE-OETRINGHAUS\, Jan Fiete (CERN)\nThe talk pres ents results from hadron correlations in PbPb collisions at 2.76 TeV with ALICE. Untriggered di-hadron correlations studies are shown which provide a map of the bulk correlation structures in heavy-ion collisions. The lo ng-range correlation region is further studied by triggered correlations w hich addresses the dependence on trigger and associated pT. The measured c orrelation functions are decomposed with a multi-parameter fit and into Fo urier components. The jet yield modification factor I_AA extracted using t riggered correlations is presented.\n\nhttp://indico.cern.ch/contributionD isplay.py?contribId=642&sessionId=37&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=642&sessionId=3 7&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Common discussion with 4 speakers DTSTART;VALUE=DATE-TIME:20110526T101500Z DTEND;VALUE=DATE-TIME:20110526T104500Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-645@cern.ch DESCRIPTION:Speakers: KOCH\, Volker (Lawrence Berkeley National Laboratory )\nhttp://indico.cern.ch/contributionDisplay.py?contribId=645&sessionId=37 &confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=645&sessionId=3 7&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:STAR correlations and fluctuations DTSTART;VALUE=DATE-TIME:20110526T100000Z DTEND;VALUE=DATE-TIME:20110526T101500Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-644@cern.ch DESCRIPTION:Speakers: SORENSEN\, Paul (BNL)\nhttp://indico.cern.ch/contrib utionDisplay.py?contribId=644&sessionId=37&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=644&sessionId=3 7&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Closing DTSTART;VALUE=DATE-TIME:20110528T095000Z DTEND;VALUE=DATE-TIME:20110528T100000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-647@cern.ch DESCRIPTION:Speakers: \nhttp://indico.cern.ch/contributionDisplay.py?contr ibId=647&sessionId=88&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=647&sessionId=8 8&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Charged hadron azimuthal anisotropy (v_2) in $sqrt s_{NN} = 2.76 $ TeV PbPb collisions from CMS DTSTART;VALUE=DATE-TIME:20110523T155000Z DTEND;VALUE=DATE-TIME:20110523T161000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-439@cern.ch DESCRIPTION:Speakers: ZHUKOVA\, Victoria (University of Kansas)\nDuring th e past decade\, azimuthal correlation measurements have played a pivotal r ole in our understanding of the properties of high density QCD matter thro ugh their sensitivity to the early stage evolution of relativistic heavy-i on collisions. Despite our increased understanding of the transport coeffi cients of the plasma produced in these collisions\, there remain many ques tions concerning the interplay between initial state conditions\, the equa tion of state\, and the evolution of the system through the final hadroniz ation stage. Detailed experimental data obtained for the energy regime acc essible using the LHC should help in establishing the shear viscosity to e ntropy ratio achieved in the produced\, strongly interacting matter. The C MS experiment has measured the anisotropy parameter\, v2\, using four diff erent methods: the event-plane\, two or four particle cumulants\, and Lee- Yang Zeros. Consistent results are found for the different methods after c onsidering their respective sensitivities to non-flow correlations and eve nt-by-event fluctuations in the initial conditions. The anisotropy is stud ied as a function of transverse momentum\, pseudorapidity and centrality i n a broad kinematic range: $0.3 \n\nhttp://indico.cern.ch/contributionDisp lay.py?contribId=439&sessionId=49&confId=30248 LOCATION:Imperial Palace Salle de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=439&sessionId=4 9&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Spectrum of initial fluctuations in the little bang DTSTART;VALUE=DATE-TIME:20110526T132000Z DTEND;VALUE=DATE-TIME:20110526T134000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-334@cern.ch DESCRIPTION:Speakers: Dr. VENUGOPALAN\, Raju (Brookhaven National Laborato ry)\nWe discuss an ab initio computation of the initial spectrum of fluctu ations in the pre-equilibrium Glasma formed in heavy ion collisions [1]. O ur result resums to all loop orders the leading unstable quantum fluctuati ons at early times. We showed explicitly previously for a scalar field the ory [2] that averaging over the analogous spectrum of initial fluctuations leads to hydrodynamic behavior. The computation can now be carried out fo r QCD and we outline the algorithm for doing so. In addition to providing a mechanism for early thermalization\, our result for the small fluctuatio n spectrum also enables one to compute a) key features of jet modification at early times and b) sphaleron transition rates in the Glasma. An unders tanding of the latter is crucial for the charge separation mechanism in th e Chiral Magnetic Effect. We relate our weak coupling albeit non-perturbat ive results to strong coupling approaches to thermalization.\n\nReferences :\n[1] K. Dusling\, F. Gelis and R. Venugopalan\, manuscript in preparatio n.\n[2] K. Dusling\, T. Epelbaum\, F. Gelis and R. Venugopalan\, Nucl. Phy s. A850:69 (2011).\n\nhttp://indico.cern.ch/contributionDisplay.py?contrib Id=334&sessionId=62&confId=30248 LOCATION:Imperial Palace Rotonde de l'Europe (150) URL:http://indico.cern.ch/contributionDisplay.py?contribId=334&sessionId=6 2&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Transition temperature and the equation of state from lattice QCD\ , Wuppertal-Budapest results DTSTART;VALUE=DATE-TIME:20110524T134000Z DTEND;VALUE=DATE-TIME:20110524T140000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-330@cern.ch DESCRIPTION:Speakers: FODOR\, Zoltan (BUW)\nThe QCD transition is studied on lattices up to Nt=16. The strange susceptibility the chiral condensate and the renormalized Polyakov loops are presented. The equation of state i s determined on lattice with Nt-6\,8\,10 and at some temperature values wi th Nt=12. The pressure\, the trace anomaly\, the energy and entropy densit y and the speed of sound are presented as functions of the temperature in the range 100 ...1000 MeV . We give estimates for the pion mass dependence and for the contribution of the charm quark. We compare our data to the e quation of state obtained by the "hotQCD" collaboration.\n\nhttp://indico. cern.ch/contributionDisplay.py?contribId=330&sessionId=54&confId=30248 LOCATION:Imperial Palace Salon Haendel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=330&sessionId=5 4&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Elliptic and triangular flow in the event-by-event 3+1D viscous hy drodynamics DTSTART;VALUE=DATE-TIME:20110527T153000Z DTEND;VALUE=DATE-TIME:20110527T155000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-333@cern.ch DESCRIPTION:Speakers: JEON\, Sangyong (McGill University)\nI will present results for elliptic and triangular flow coefficients\nv2 and v3 in Au+Au collisions at\nsqrt(s) = 200A GeV using event-by-event 3+1D viscous hydrod ynamic simulations. I will report on the effect of initial state fluctuati ons and finite viscosities on the flow coefficients v2 and v3 as functions of transverse momentum and pseudo-rapidity. \nI will argue that simultane ous measurements of v2 and v3 can determine the shear viscosity-entropy ra tio more precisely. I will also touch upon\nrecent calculations of v2 and v3 for the LHC heavy ion collisions.\n\nhttp://indico.cern.ch/contribution Display.py?contribId=333&sessionId=75&confId=30248 LOCATION:Imperial Palace Salon Ravel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=333&sessionId=7 5&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:PHENIX Highlights DTSTART;VALUE=DATE-TIME:20110523T084000Z DTEND;VALUE=DATE-TIME:20110523T090500Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-99@cern.ch DESCRIPTION:Speakers: Dr. BATHE\, Stefan (RIKEN-BNL Research Center)\nAfte r establishing the creation of dense partonic matter in the early\nyears o f RHIC\, the focus of recent experimental and theoretical effort\nhas been to determine the properties of this partonic medium. With\nthe advent of the LHC\, there is now a new aspect to this quest:\nare the properties of the medium created at the LHC different from that\ncreated at RHIC? In t his light\, we will\npresent the latest experimental results of the PHENIX collaboration\,\nfurther constraining the properties of the sQGP at RHIC. \n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=99&sessionId=3& confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=99&sessionId=3& confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Overview of the experimental results by the CMS Collaboration DTSTART;VALUE=DATE-TIME:20110523T102000Z DTEND;VALUE=DATE-TIME:20110523T104500Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-98@cern.ch DESCRIPTION:Speakers: WYSLOUCH\, Bolek (MIT)\nWe will present early result s of the CMS experiment from PbPb collisions at\n√sNN = 2.76 TeV\, probi ng quark and gluon matter at unprecedented\nvalues of energy density. The capabilities of the CMS apparatus allows us to\ninvestigate various hard p robes\, as well as bulk particle production and\ncollective phenomena\, us ing the calorimetry\, muon and tracking systems covering\na large range in pseudorapidity\, complemented by a flexible two-level trigger\nsystem.\n\ nhttp://indico.cern.ch/contributionDisplay.py?contribId=98&sessionId=3&con fId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=98&sessionId=3& confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:The high energy frontier of A-A DTSTART;VALUE=DATE-TIME:20110528T090000Z DTEND;VALUE=DATE-TIME:20110528T093000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-91@cern.ch DESCRIPTION:Speakers: ANTINORI\, Federico (INFN Padova\, Italy)\nhttp://in dico.cern.ch/contributionDisplay.py?contribId=91&sessionId=83&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=91&sessionId=83 &confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Non-conformal holography of light and heavy quark jet quenching at RHIC and LHC DTSTART;VALUE=DATE-TIME:20110527T132000Z DTEND;VALUE=DATE-TIME:20110527T134000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-92@cern.ch DESCRIPTION:Speakers: FICNAR\, Andrej (Columbia University\, New York\, US A)\nWe investigate the connection between the conformal anomaly in the con finement transition region and quenching of heavy and light quarks in heav y ion collisions at RHIC and LHC by using a new non-conformal holographic model with a dilaton field. Holographic thermodynamic properties of the sQ GP are constrained by lattice QCD calculations. The string drag force mode l of jets is generalized to include both trailing and falling string scena rios. We compare the differential nuclear modification of light and heavy quark jets predicted by this model emphasizing the novel quark mass and en ergy dependence through the confinement transition region.\n\nhttp://indic o.cern.ch/contributionDisplay.py?contribId=92&sessionId=85&confId=30248 LOCATION:Imperial Palace Salon Berlioz AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=92&sessionId=85 &confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Results from lead-lead collisions with the ATLAS Detector at the L HC DTSTART;VALUE=DATE-TIME:20110523T095500Z DTEND;VALUE=DATE-TIME:20110523T102000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-97@cern.ch DESCRIPTION:Speakers: STEINBERG\, Peter (Brookhaven National Laboratory)\n http://indico.cern.ch/contributionDisplay.py?contribId=97&sessionId=3&conf Id=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=97&sessionId=3& confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Overview of the experimental results by the ALICE Collaboration DTSTART;VALUE=DATE-TIME:20110523T093000Z DTEND;VALUE=DATE-TIME:20110523T095500Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-96@cern.ch DESCRIPTION:Speakers: SCHUKRAFT\, Juergen (CERN)\nIn this talk we summariz e the results obtained by ALICE Collaboration in the first Pb-Pb run at LH C.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=96&sessionId= 3&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=96&sessionId=3& confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Some new results on high-energy "jet stopping" in AdS/CFT DTSTART;VALUE=DATE-TIME:20110527T130000Z DTEND;VALUE=DATE-TIME:20110527T132000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-153@cern.ch DESCRIPTION:Speakers: ARNOLD\, Peter (University of Virginia)\nA very basi c theoretical question is: How far does a high-energy excitation travel in a quark-gluon plasma\, and how does that distance scale with energy? In weak coupling\, the stopping distance scales with energy as E^(1/2)\, up t o logarithms. In strongly-coupled plasmas with gravity duals\, theorists have found that the maximum stopping distance scales instead like E^(1/3). In the latter case\, we show that there can be an important distinction between typical and maximum stopping distances. For the strongly-coupled excitations we study\, we find that the typical stopping distance scales a s E^(1/4).\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=153&s essionId=85&confId=30248 LOCATION:Imperial Palace Salon Berlioz AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=153&sessionId=8 5&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:High-pT suppression of Lambda and K0s in PbPb collisions at sqrt(s NN) = 2.76 TeV with ALICE DTSTART;VALUE=DATE-TIME:20110523T161000Z DTEND;VALUE=DATE-TIME:20110523T163000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-559@cern.ch DESCRIPTION:Speakers: SCHUCHMANN\, Simone (Institut fuer Kernphysik-Johann -Wolfgang-Goethe Univ.)\nSignificant suppression of unidentified charged p articles at large transverse momentum has been observed in central Pb-Pb c ollisions at the LHC.\nMeasurements of identified particles will provide m ore detailed information on the suppression mechanism. The production of L ambda and K0s at mid-rapidity in pp and Pb-Pb at sqrt(sNN) = 2.76 TeV is s tudied with the ALICE detector at the LHC. Lambda and K0s are measured by reconstructing their weak decays into charged hadrons\, employing the trac king capabilites of the ALICE central barrel. The analysis of Lambda and K 0s production in Pb-Pb is performed in intervals of the collision centrali ty and compared to results from pp at the same collision energy. We discus s the centrality dependence with particular emphasis on strange particle s uppression at high pT.\n\nhttp://indico.cern.ch/contributionDisplay.py?con tribId=559&sessionId=99&confId=30248 LOCATION:Imperial Palace Salon Haendel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=559&sessionId=9 9&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Diffraction dissociation of protons in proton-proton collisions at \\sqrt{s} = 0.9 TeV\, 2.76 TeV and 7 TeV with ALICE at the LHC DTSTART;VALUE=DATE-TIME:20110523T144000Z DTEND;VALUE=DATE-TIME:20110523T150000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-555@cern.ch DESCRIPTION:Speakers: Dr. POGHOSYAN\, Martin (Universita & INFN\, Torino)\ n(for the ALICE Collaboration)\n\nThe relative rates of single‐ and doub le‐ diffractive processes were measured with the ALICE detector by study ing properties of gaps in the pseudorapidity distribution of particles pro duced in proton‐proton collisions at \\sqrt{s} = 0.9 TeV\, 2.76 TeV and 7 TeV. ALICE triggering efficiencies were determined for various classes o f events\, using a detector simulation validated with data on inclusive pa rticle production. Cross‐sections were determined using van der Meer sca ns to measure beam properties.\n\nhttp://indico.cern.ch/contributionDispla y.py?contribId=555&sessionId=45&confId=30248 LOCATION:Imperial Palace Salle de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=555&sessionId=4 5&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Measurement of charged particle pseudorapidity density in PbPb col lisions at sqrt(s_NN) = 2.76 TeV with the ATLAS detector at the LHC DTSTART;VALUE=DATE-TIME:20110523T140000Z DTEND;VALUE=DATE-TIME:20110523T142000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-143@cern.ch DESCRIPTION:Speakers: CHEN\, Yujiao (Columbia University)\nCharged particl e multiplicity is an important bulk observable for heavy ion collisions. It measures the global features of the medium produced and constrains the initial conditions of the system. It also provides an important test for dynamical model calculations which predict the dependence of multiplicity on centrality at RHIC and the LHC. We present the study of charged partic le pseudorapidity density distributions over a broad range of pseudorapidi ty and centrality in Pb+Pb collisions at √sNN = 2.76 TeV with the ATLAS detector at LHC. The centrality dependence of the particle density near mi d-rapidity scaled by the number of participating nucleon pairs (dNch/dη(| η| \n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=143&session Id=45&confId=30248 LOCATION:Imperial Palace Salle de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=143&sessionId=4 5&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Measurements of Jets and Jet Quenching in sqrt(s_NN)=2.76 TeV PbPb Collisions with the ATLAS Detector at the LHC DTSTART;VALUE=DATE-TIME:20110524T132000Z DTEND;VALUE=DATE-TIME:20110524T134000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-140@cern.ch DESCRIPTION:Speakers: ANGERAMI\, Aaron Richard (Columbia University)\nJet quenching\, the parton energy loss in the hot and dense medium created in ultra-relativistic heavy ion collisions\, is a well-established experiment al phenomenon at RHIC. However\, existing single hadron\, di-hadron and mu lti-hadron measurements from RHIC do not provide a complete understanding of the experimental results and do not sufficiently constrain theoretical models. Reconstructed jet measurements in heavy ion collisions are expecte d to significantly improve experimental sensitivity to quenching and to mo re stringently constrain theoretical descriptions of the quark/gluon-mediu m interaction. Thus\, prior to its commencement\, it was anticipated that the LHC heavy ion program would substantially advance the study of jet que nching by providing access to jets with transverse energies in excess of 1 00 GeV -- sufficiently high that the underlying event would provide only a modest perturbation to the jet measurements. Immediately following turn- on of the LHC in November\, 2010\, that expectation was satisfied through the observation of large di-jet asymmetries that may indicate substantial jet quenching. In this talk we will present results from ATLAS measurement s of single jet production\, di-jet correlations and jet fragmentation in Pb+Pb collisions at $\\sqrt{s_{NN} = 2.76$~TeV. These results include an u pdate on the original di-jet asymmetry analysis using the full statistics from the Fall 2010 LHC Pb+Pb run.\n\nhttp://indico.cern.ch/contributionDis play.py?contribId=140&sessionId=51&confId=30248 LOCATION:Imperial Palace Salle de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=140&sessionId=5 1&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Measurement of elliptic flow in sqrt(s_NN)=2.76 TeV PbPb collision s with the ATLAS detector at the LHC. DTSTART;VALUE=DATE-TIME:20110527T130000Z DTEND;VALUE=DATE-TIME:20110527T132000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-141@cern.ch DESCRIPTION:Speakers: TRZUPEK\, Adam (Henryk Niewodniczanski Inst. Nucl. P hysics\, PAN)\nThe measurement of the elliptic flow for charged particles in Pb+Pb collisions at sqrt(s_NN)=2.76 TeV with the ATLAS detector will be presented in a wide range of pseudorapidity\, transverse momentum and col lision centrality. The elliptic flow is measured by correlating azimuthal angles of reconstructed particle tracks with the event plane angle obtaine d from forward calorimeters. A large pseudorapidity gap between the tracki ng system and forward calorimeters significantly reduces contributions fro m short-range non-flow effects. For the first time at this energy\, ellipt ic flow is measured over 5 units of pseudorapidity\, from -2.5 to 2.5\, an d over a broad range in transverse momentum\, 0.5-20 GeV. The results will be discussed in the context of previous measurements and theoretical mode l predictions.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=1 41&sessionId=67&confId=30248 LOCATION:Imperial Palace Salons Ravel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=141&sessionId=6 7&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Initial condition fluctuations in heavy ion collisions DTSTART;VALUE=DATE-TIME:20110523T144000Z DTEND;VALUE=DATE-TIME:20110523T150000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-613@cern.ch DESCRIPTION:Speakers: MOTA\, Philippe (Institut für Theoretische Physik\, Goethe-Universität)\nWe investigate the effect of event-by-event fluctua tions and the degree of granularity in the initial conditions on the colle ctive evolution of matter created in heavy-ion collisions using fluid dyna mics. Motivated by the glasma-flux-tube scenario\, we model the initial co ndition by a set of randomly distributed longitudinal tubes in a boost-inv ariant 2D geometry. The model introduces two parameters: the number of tub es in each event and the transverse (gaussian) width in energy density of a tube. The number of tubes fluctuates event by event and the width of the tubes introduces a granularity to the initial condition. Both parameters strongly affect the hydrodynamical evolution. For instance\, we observe th at the increasing granularity reduces the slope of the transverse momentum spectra\, decreases the value of the differential elliptic flow at the av erage transverse momentum\, and generates a double-peak structure in the t wo-particle distribution. With this framework\, we aim to constrain the in itial condition of a heavy-ion collision by performing a systematic analys is of the effects of each parameter on the final observables.\n\nhttp://in dico.cern.ch/contributionDisplay.py?contribId=613&sessionId=46&confId=3024 8 LOCATION:Imperial Palace Rotonde de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=613&sessionId=4 6&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Characterizing cold nuclear matter effects through dielectrons in d+Au collisions at √NN = 200 GeV at PHENIX DTSTART;VALUE=DATE-TIME:20110527T161000Z DTEND;VALUE=DATE-TIME:20110527T163000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-616@cern.ch DESCRIPTION:Speakers: KAMIN\, Jason (State University of New York at Stony Brook)\nElectron-positron pairs are effective probes for investigating th e\nhot\, dense matter created in RHIC collisions because they are carry no \ncolor charge and therefore\, once created\, do not interact strongly\nwi th the medium. As a result\, they retain characteristics of the full\ntim e evolution and dynamics of the system. Among the many features\,\nthe lo w mass region (m\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId =616&sessionId=76&confId=30248 LOCATION:Imperial Palace Salon Haendel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=616&sessionId=7 6&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Jet quenching from RHIC to LHC DTSTART;VALUE=DATE-TIME:20110524T144000Z DTEND;VALUE=DATE-TIME:20110524T150000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-149@cern.ch DESCRIPTION:Speakers: RENK\, Thorsten (University of Jyväskylä)\nDespite a wealth of experimental data for high p_T processes in heavy-ion collisi ons\, discriminating between different models of hard parton-medium intera ctions has been difficult. A large reason is that the pQCD parton spectrum at RHIC is so steeply falling that distinguishing even a moderate shift i n parton energy from complete parton absorption is essentially impossible. In essence\, energy loss models are effectively only probed in the vicini ty of zero energy loss and as a result\, only the pathlength dependence of energy loss offers some discriminating power at RHIC kinematics. At LHC\, this is no longer the case: Due to the much flatter shape of the parton s pectra originating from 2.76 AGeV collisions\, the available data probe mu ch deeper into the model dynamics. A simultaneous fit of the nuclear suppr ession both at RHIC and LHC kinematics has thus a huge potential to discri minate between various models with equally good description of RHIC data a lone.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=149&sessio nId=51&confId=30248 LOCATION:Imperial Palace Salle de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=149&sessionId=5 1&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Running coupling corrections to high energy inclusive gluon produc tion DTSTART;VALUE=DATE-TIME:20110523T142000Z DTEND;VALUE=DATE-TIME:20110523T144000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-154@cern.ch DESCRIPTION:Speakers: Prof. KOVCHEGOV\, Yuri (The Ohio State University)\n We calculate running coupling corrections for the lowest-order gluon produ ction cross section in high energy hadronic and nuclear scattering using t he BLM scale-setting prescription. In the final answer for the cross secti on the three powers of fixed coupling are replaced by seven factors of run ning coupling\, five in the numerator and two in the denominator\, forming a 'septumvirate' of running couplings\, analogous to the 'triumvirate' of running couplings found earlier for the small-x BFKL/BK/JIMWLK evolution equations. We use our lowest-order result to conjecture how running coupli ng corrections may enter the full fixed-coupling kT-factorization formula for gluon production which includes non-linear small-x evolution. This wor k is the latest theoretical improvement on the approach used recently by A lbacete and Dumitru in arXiv:1011.5161 [hep-ph] to accurately predict the centrality dependence of the charged particle multiplicity density measure d by ALICE collaboration.\n\nhttp://indico.cern.ch/contributionDisplay.py? contribId=154&sessionId=4&confId=30248 LOCATION:Imperial Palace Salon Ravel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=154&sessionId=4 &confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Initial state fluctuations at RHIC and LHC: hadronic or partonic o rigin? DTSTART;VALUE=DATE-TIME:20110526T140000Z DTEND;VALUE=DATE-TIME:20110526T142000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-131@cern.ch DESCRIPTION:Speakers: PETERSEN\, Hannah (Duke University)\nThis talk will discuss how triangular flow measurements in Pb+Pb collisions at\nthe LHC c an be used to constrain the origin of initial state fluctuations. We\nexp lore the energy dependence of elliptic and triangular flow within a\n(3+1) -dimensional hybrid framework starting from a non-equilibrium initial stat e\nwith event-by-event fluctuations and including an ideal hydrodynamical expansion\nphase followed by hadronic Boltzmann transport. This approach h as been shown to\ndescribe well the existing RHIC and LHC data on bulk obs ervables such as\nparticle yields\, spectra and elliptic flow. The initial energy deposition can be\nmodeled either in a partonic or a hadronic pict ure using\, respectively\, a parton\ncascade or the hadronic transport mo del UrQMD. We present a\ndetailed comparison between the shape and fluctua tions of the two initial\nconditions prior to the hydrodynamical evolution . Our analysis then compares the\ndifferences in final state observables s uch as triangular flow in order to\nidentify sensitivities to the degrees of freedom driving the energy deposition.\n\nhttp://indico.cern.ch/contrib utionDisplay.py?contribId=131&sessionId=62&confId=30248 LOCATION:Imperial Palace Rotonde de l'Europe (150) URL:http://indico.cern.ch/contributionDisplay.py?contribId=131&sessionId=6 2&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Far-from-equilibrium anisotropic collective flow DTSTART;VALUE=DATE-TIME:20110527T163000Z DTEND;VALUE=DATE-TIME:20110527T165000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-137@cern.ch DESCRIPTION:Speakers: Prof. BORGHINI\, Nicolas (University of Bielefeld)\, Dr. GOMBEAUD\, Clément (University of Bielefeld)\nNovel analytical resul ts for the anisotropic collective flow of massive particles with a small i nteraction cross-section are presented. In particular\, we show that\, eve n when particles rescatter at most once\, a sizable elliptic flow $v_2$ is generated\, with mass ordering of the various particle species.\n\nhttp:/ /indico.cern.ch/contributionDisplay.py?contribId=137&sessionId=75&confId=3 0248 LOCATION:Imperial Palace Salon Ravel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=137&sessionId=7 5&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Multi-strange particle measurements in 7 TeV proton-proton and 2.7 6 TeV PbPb collisions with the ALICE experiment at the LHC DTSTART;VALUE=DATE-TIME:20110523T155000Z DTEND;VALUE=DATE-TIME:20110523T161000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-499@cern.ch DESCRIPTION:Speakers: CHINELLATO\, D.D. (Instituto de Fisica Gleb Wataghin (IFGW) - Universidade Estadual de Campinas)\nThe production of charged mu lti-strange particles is studied with the ALICE experiment at the CERN LHC . Measurements of the central rapidity yields of $\\Xi^{-}$ and $\\Omega^{ -}$ baryons\, as well as their antiparticles\, are presented as a function of transverse momentum ($p_{T}$) for inelastic pp collisions at $\\sqrt{s }=7\\:TeV$ and compared to existing measurements performed at the same and /or at lower energies. The results are also compared to predictions from P HOJET and several tunes of the PYTHIA event generators. We find that data significantly exceed the production rates from those models\, everywhere e xcept potentially for high $p_{T}$\, where hard QCD processes dominate. Fi nally\, we present the status of the multi-strange particle production stu dies in Pb-Pb at $\\sqrt{s}=2.76\\:TeV$ performed as a function of collisi on centrality.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=4 99&sessionId=99&confId=30248 LOCATION:Imperial Palace Salon Haendel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=499&sessionId=9 9&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Jet Reconstruction and Jet Background Classification with the ALIC E experiment in PbPb collisions at the LHC DTSTART;VALUE=DATE-TIME:20110524T142000Z DTEND;VALUE=DATE-TIME:20110524T144000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-495@cern.ch DESCRIPTION:Speakers: Dr. KLEIN-BOESING\, Christian (IKP Muenster)\nThe qu antification of the effect of parton energy loss\, known as jet\nquenching \, is one of the major goals of jet and high $p_T$\nmeasurements in heavy- ion collisions. Here\, the aim of the reconstruction of\njets\, as compare d to single particle measurements\, is to provide a more direct\naccess to the original parton properties and the modification of the\nfragmentation process in heavy-ion collisions.\n\nFor a clear interpretation of the rec onstructed jet properties and the\nmeasurement of the inclusive jet spectr um in heavy-ion collisions a detailed characterization of the\nbackground and its fluctuation is paramount. In particular collective\neffects within one event can enhance or deplete locally the level of\nbackground and mod ify the jet energy scale.\n\nThe ALICE detector with its excellent trackin g capabilities is the\nideal tool to study jet reconstruction based on cha rged particles in the presence of\ncorrelated and uncorrelated background down to particle $p_T$ of 150\nMeV/$c$. \n\nWe will evaluate the evolutio n of background effects using different\nprobes embedded into heavy-ion da ta and quantify their influence on\nthe reconstructed jet spectrum.\n\nhtt p://indico.cern.ch/contributionDisplay.py?contribId=495&sessionId=51&confI d=30248 LOCATION:Imperial Palace Salle de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=495&sessionId=5 1&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:K0s and Lambda production in PbPb collisions with the ALICE experi ment DTSTART;VALUE=DATE-TIME:20110523T153000Z DTEND;VALUE=DATE-TIME:20110523T155000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-497@cern.ch DESCRIPTION:Speakers: BELIKOV\, Iouri (IPHC\, CNRS-IN2P3)\nWe present the study of K0s and Lambda production performed with\nthe ALICE experiment at the LHC in Pb-Pb collisions at sqrt(sNN)=2.76 TeV and pp collisions at sq rt(s)=0.9 and 7 TeV.\nThe K0s and Lambda particles are reconstructed via t heir V0 decay\ntopology allowing their identification up to high transvers e momenta.\nThe corresponding baryon/meson ratios as a function of transve rse momentum are extracted for Pb-Pb collisions in centrality bins and\nin the transverse momentum range from 1 to 10 GeV/c.\nThey are also compared with the ones measured in pp events at the LHC energies of 0.9 and 7 TeV as well as in Au-Au collisions at sqrt(sNN)=0.2 TeV from RHIC.\n\nhttp://i ndico.cern.ch/contributionDisplay.py?contribId=497&sessionId=99&confId=302 48 LOCATION:Imperial Palace Salon Haendel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=497&sessionId=9 9&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Resonance measurement in pp and PbPb collisions at LHC with the AL ICE detector DTSTART;VALUE=DATE-TIME:20110523T144000Z DTEND;VALUE=DATE-TIME:20110523T150000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-492@cern.ch DESCRIPTION:Speakers: Dr. PULVIRENTI\, Alberto (University / INFN Catania) \nThe study of resonances production in pp collisions contributes to the p roper tuning of the QCD-inspired particle production models and to the bet ter understanding of the underlying event\, while in PbPb collisions reson ances are good probes to estimate the collective properties of the firebal l\, and in particular its lifetime. \nStrange resonances can also contribu te to the historical topic of strangeness production measurement.\npT spec tra have been measured for φ\, K ∗ \, Σ∗ and Ξ∗ resonances using data from pp collisions at 7 TeV in LHC\, measured by the ALICE detector.\ nMesons were analyzed in a rapidity window of ±0.5 while baryons in a win dow of ±0.8. Results will be shown from comparisons with several MC model s\, which show in general an acceptable match\, except for the Ξ∗ which appear to be underestimated. \nMoreover\, first results from the analysis of φ resonance in Pb-Pb collisions at 2.76 ATeV will be presented.\n\nht tp://indico.cern.ch/contributionDisplay.py?contribId=492&sessionId=6&confI d=30248 LOCATION:Imperial Palace Salon Haendel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=492&sessionId=6 &confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:K0sK0s correlations in 7 TeV proton+proton collisions from the ALI CE experiment at the LHC DTSTART;VALUE=DATE-TIME:20110523T161000Z DTEND;VALUE=DATE-TIME:20110523T163000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-493@cern.ch DESCRIPTION:Speakers: Prof. HUMANIC\, Thomas (Relativistic Heavy Ion Group \, Department of Physics - Ohio State U.)\nIdentical neutral kaon pair cor relations are measured in 7 TeV proton+proton collisions in the ALICE expe riment. Neutral kaons are identified from their decay into π+π- pairs. K 0sK0s correlation functions are formed in 4 multiplicity x 4 kT bins. The kaon source parameters Rinv and λ are extracted from these correlation fu nctions by fitting a Gaussian*PYTHIA model to them\, the Gaussian describi ng the Bose effect and PYTHIA accounting for the non-flat baseline found i n proton+proton collisions. PYTHIA with the Perugia-0 tune is seen to desc ribe well the dependence of the baseline shape of the K0sK0s correlation f unction on multiplicity-kT bin in the Qinv fitting range used of 0-1 GeV. Corrections to source parameters from the Lednicky model for the a0/f0 res onance are made and found to be large. K0sK0s correlations show a systemat ic increase in Rinv for increasing multiplicity bin and decreasing Rinv fo r increasing kT bin as seen in ππ correlations in the proton+proton syst em\, as well as seen in heavy-ion collisions. Also\, K0sK0s correlations a re observed to more or less “smoothly” extend this ππ Rinv behavior for the proton+proton system to ~3 times higher kT than the kT range measu red in ππ correlations.\n\nhttp://indico.cern.ch/contributionDisplay.py? contribId=493&sessionId=50&confId=30248 LOCATION:Imperial Palace Rotonde de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=493&sessionId=5 0&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Measurement of light vector mesons by PHENIX experiment at RHIC DTSTART;VALUE=DATE-TIME:20110523T165000Z DTEND;VALUE=DATE-TIME:20110523T171000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-402@cern.ch DESCRIPTION:Speakers: Dr. SHARMA\, Deepali (Weizmann Institute of Science) \nThe PHENIX experiment at RHIC has carried out systematic measurements of $\\phi$ and $\\omega$ mesons in $p+p$\, $d+Au$\, $Cu+Cu$ and $Au+Au$ coll isions at $\\sqrt{s_{NN}}$ = 200 GeV. Consistent results have been obtaine d using leptonic and hadronic decay modes as well as different analysis te chniques.\n \nIn $p+p$ collisions\, the transverse momentum distributions of $\\omega$ and $\\phi$\, as well as all other mesons measured by PHENIX \, are well described by the Tsallis distribution functional form. Combini ng the $e^+e^-$ and hadronic ($\\omega \\rightarrow \\pi^0 gamma\,~\\pi^0\ \pi^+\\pi^-$\, $\\phi \\rightarrow K^+K^-$) decay channels\, $\\omega$ and $\\phi$ have been measured over a $p_T$ range of 0 - 13.5 GeV/c and 0 - 7 GeV/c respectively. New results obtained using hadronic and dielectron ch annels of $\\omega$ and $\\phi$ mesons in $d+Au$ collisions extend the $p_ T$ coverage to 0.25 - 13 GeV/c and 0 - 7 GeV/c respectively\, and reveal a moderate enhancement at intermediate $p_T$ and a hint of suppression at $ p_T >$ 8 GeV/c. Both observations are consistent with previous results for $\\pi^0$\, $\\pi^+ + \\pi^-$\, $K_s$ and $K^+ + K^-$.\n\nThe nuclear modi fication factor of $\\omega$ in $Cu+Cu$ and $Au+Au$ collisions measured ov er a $p_T$ range of 4 - 12 GeV/c\, shows that $\\omega$ has a similar supp ression pattern as that of $\\pi^0$ and $\\eta$\, strengthening the observ ation that mesons with different masses have similar behavior but differe nt from the one of baryons. However\, $\\phi$ in $Cu+Cu$ and $Au+Au$ colli sions\, measured from 1 - 7 GeV/c\, shows a suppression\, that is smaller than that of the $\\pi^0$ and $\\eta$ in the intermediate $p_T$ range (2 - 5 GeV/c)\, whereas at higher $p_T$\, within the large experimental uncert ainties\, the amount of suppression appears similar to that of the light m esons. Results of $\\phi$ production at $\\sqrt{s_{NN}}$ = 62.4 GeV show a similar behavior but with larger uncertainties. This talk will review the most recent results obtained for light vector mesons in different collisi on systems and energies.\n\nhttp://indico.cern.ch/contributionDisplay.py?c ontribId=402&sessionId=99&confId=30248 LOCATION:Imperial Palace Salon Haendel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=402&sessionId=9 9&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Heavy quark diffusion from lattice QCD spectral functions DTSTART;VALUE=DATE-TIME:20110523T165000Z DTEND;VALUE=DATE-TIME:20110523T171000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-379@cern.ch DESCRIPTION:Speakers: Dr. DING\, Heng-Tong (Brookhaven National Lab)\nWe a nalyze the low energy part of charmonium spectral functions on large latti ces close to the continuum limit in the temperature region $1.5\n\nhttp:// indico.cern.ch/contributionDisplay.py?contribId=379&sessionId=98&confId=30 248 LOCATION:ImpErial Palace Salon Ravel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=379&sessionId=9 8&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Search for local strong parity violation in STAR using multiple ob servables DTSTART;VALUE=DATE-TIME:20110527T140000Z DTEND;VALUE=DATE-TIME:20110527T142000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-370@cern.ch DESCRIPTION:Speakers: GANGADHARAN\, Dhevan (Department of Physics-Ohio Sta te University)\nParity-odd domains from QCD are predicted to cause charge separation of quarks across the reaction-plane created in non-central rela tivistic heavy ion collisions--The Chiral Magnetic Effect [1]. Here we pre sent several measurements to search for charge separation across the react ion-plane at STAR. We use three different observables: a three point corre lator\, a multiplicity asymmetry correlator\, as well as a reaction-plane dependent balance function. The correlations are studied differentially an d are presented for several Au+Au collision energies: 200\, 62.4\, 39\, 11 .5\, and 7.7 GeV. We will discuss the sensitivities of these latest measur ements to possible parity odd signals and parity even backgrounds.\n\nhttp ://indico.cern.ch/contributionDisplay.py?contribId=370&sessionId=67&confId =30248 LOCATION:Imperial Palace Salons Ravel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=370&sessionId=6 7&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Relativistic theory of hydrodynamic fluctuations DTSTART;VALUE=DATE-TIME:20110523T171000Z DTEND;VALUE=DATE-TIME:20110523T173000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-374@cern.ch DESCRIPTION:Speakers: Prof. KAPUSTA\, Joseph (University of Minnesota)\nHy drodynamic fluctuations have been applied to a wide variety of physical\, chemical\, and biological phenomena in the past decade. In the context of high energy heavy ion collisions\, there will be intrinsic fluctuations d ue to the finite size and finite particle content even if the initial cond itions are fixed. We develop the theory of relativistic fluctuations\, a nd apply it to a 1+1 dimensional boost invariant model. In analogy to the cosmic microwave background radiation\, fluctuations might provide inform ation on the equation of state\, including a possible critical point\, and on the transport coefficients.\n\nhttp://indico.cern.ch/contributionDispl ay.py?contribId=374&sessionId=50&confId=30248 LOCATION:Imperial Palace Rotonde de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=374&sessionId=5 0&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Radiative energy loss reduction in a plasma due to damping DTSTART;VALUE=DATE-TIME:20110526T130000Z DTEND;VALUE=DATE-TIME:20110526T132000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-377@cern.ch DESCRIPTION:Speakers: Dr. BLUHM\, Marcus (Laboratoire SUBATECH)\nThe stron g quenching of jets and the suppression of hadron spectra \nat high transv erse momenta are striking experimental observations \nmade in high energy nuclear collisions. Both have been interpreted \nas signature for the form ation of a deconfined plasma of QCD \nmatter\, in which partons suffer a m edium-induced energy loss. In \ntheoretical studies devoted to a parton's radiative energy loss\, \nhowever\, the damping of radiation within the pl asma has so far \nwidely been neglected. \n\nWe investigate the radiative energy loss per unit distance of a \nrelativistic colour charge traversing as probe an infinite \nabsorptive plasma. The Landau-Pomeranchuk-Migdal e ffect is \nincorporated as well as modifications due to the polarization o f \nand damping mechanisms in the medium. The latter are \nphenomenologica lly described by a complex index of refraction\, \nwhile the colour charge dynamics is considered in the Abelian \napproximation. We find a substant ial reduction of the medium-\ninduced mechanical work in addition to the w ell known Ter-\nMikaelian effect from the polarization of matter. Moreover \, the \nformation time of radiated quanta is also drastically reduced\, \ nboth for small frequencies\, where damping has a minor additional \nimpac t besides the polarization effect\, and for larger frequencies. \nThese ef fects are more pronounced for larger medium damping \nand/or larger initia l energy of the charge. \n\nTherefore\, we expect that our study will have a significant impact \non the understanding of jet quenching phenomena in ultra-\nrelativistic heavy-ion collisions at RHIC and even more at LHC.\n \nhttp://indico.cern.ch/contributionDisplay.py?contribId=377&sessionId=62& confId=30248 LOCATION:Imperial Palace Rotonde de l'Europe (150) URL:http://indico.cern.ch/contributionDisplay.py?contribId=377&sessionId=6 2&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Measurements of charged particle spectra in sqrt(s_NN)=2.76 PbPb c ollisions with the ATLAS detector at the LHC DTSTART;VALUE=DATE-TIME:20110526T132000Z DTEND;VALUE=DATE-TIME:20110526T134000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-144@cern.ch DESCRIPTION:Speakers: MILOV\, Alexander (Weizmann Institute of Science)\nT he measurement of charged particle spectra in heavy ion collisions is a di rect way to study properties of hot and dense matter created in these inte ractions. The centrality dependence of the spectral shape is an important tool to understand the interplay between collective flow and energy loss mechanisms. The ATLAS detector at the LHC took lead-lead data at 2.76 TeV per nucleon-nucleon pair with an integrated luminosity of just over 9µb- 1. The ATLAS inner detector consists of 3 layers of silicon pixel detecto rs and 4 double sided strip layers in the barrel regions\, with pixel and strip discs covering the forward region out to $|\\eta|=2.5$. Due to the excellent capabilities of the ATLAS detector\, and its stable operation du ring the first heavy ion run\, these data allow measurements of the charge d particle spectra and their ratios in different centrality bins over a wi de range of transverse momenta and pseudorapidity. Comparison of ATLAS re sults to the results measured at lower energy will provide the opportunity to study the differences between the medium formed at the LHC and RHIC.\n \nhttp://indico.cern.ch/contributionDisplay.py?contribId=144&sessionId=61& confId=30248 LOCATION:Centre Bonlieu Salle de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=144&sessionId=6 1&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:The thermal model on the verge of the ultimate test: the LHC data DTSTART;VALUE=DATE-TIME:20110523T163000Z DTEND;VALUE=DATE-TIME:20110523T165000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-396@cern.ch DESCRIPTION:Speakers: Dr. ANDRONIC\, Anton (Gesellschaft fuer Schwerionenf orschung mbH (GSI))\nIn our model\, both the light (u\,d\,s) quark sector and charm(onium) \nhave found a unified description\, thus providing very different \nprobes for a possible delineation of the phase boundary betwee n \ndeconfined and hadronic matter produced in nucleus-nucleus collisions\ nfrom low (AGS) energies up to RHIC energy.\nA purely thermal production ( at chemical freeze-out) appears natural\nfor u\,d\,s-carrying hadrons and a good degree of consensus has been \nachieved with the RHIC data\, at lea st for central collisions.\nWe are rather confident in predicting the chem istry of ligh-quark \nhadrons at the LHC.\nIn contrast\, charmed hadrons a nd charmonia can be produced \nat chemical freeze-out only as a result of a "distribution" into \nhadrons of charm quarks produced in primary hard c ollisions. \nOur model describes rather well the RHIC and SPS data on char monia\,\nwhich will be reviewed briefly.\nWe expect that generation at the phase boundary is at the LHC the \nexclusive mechanism (thus lifting the present controversy whether \ncharmonia melt or not in the deconfined stag e at RHIC and SPS \nenergies).\nWith some of the model ingredients (like t he volume at chemical \nfreeze-out) already constrained by the first LHC d ata\, the main\nuncertainty in our predictions remains the charm cross sec tion\nin Pb-Pb\, where shadowing is not yet known.\nIn addition to the ove rall hadron abundancies\, including those of \nlight (hyper)nuclei and the ir antiparticles\, we provide predictions \nfor charmonia and for charmed hadrons\, to be confronted soon with\nthe LHC data.\n\nhttp://indico.cern. ch/contributionDisplay.py?contribId=396&sessionId=99&confId=30248 LOCATION:Imperial Palace Salon Haendel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=396&sessionId=9 9&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:PHENIX heavy flavor DTSTART;VALUE=DATE-TIME:20110527T070000Z DTEND;VALUE=DATE-TIME:20110527T072500Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-80@cern.ch DESCRIPTION:Speakers: DASILVA\, Cesar luiz (Los Alamos National Lab)\nhttp ://indico.cern.ch/contributionDisplay.py?contribId=80&sessionId=59&confId= 30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=80&sessionId=59 &confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Quarkonia measurements by the CMS experiment in pp and PbPb collis ions DTSTART;VALUE=DATE-TIME:20110527T083000Z DTEND;VALUE=DATE-TIME:20110527T085500Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-81@cern.ch DESCRIPTION:Speakers: SILVESTRE\, Catherine (Los Alamos National Laborator y (LANL)-Laboratoire de Physique Subatomique et Cosmologie (LPSC\, Grenob le))\nCMS is fully equipped to measure hard probes in the di-muon decay ch annel in the high multiplicity environment of nucleus-nucleus collisions. Such probes are\nespecially relevant for studying the quark gluon plasma s ince they are produced\nat early times and propagate through the medium\, mapping its evolution.\nQuarkonia and bottomonia are sensitive to the evol ution of the medium. In\nparticular\, the $J\\psi$ production in heavy ion collisions has been studied at\ndifferent energies and with different col lision systems without yet giving a\nglobal picture that is fully understo od. Measuring the charmonium production at\nthe LHC energies in PbPb colli sions will help constraining predictions\, in\nparticular those expecting high recombination of prompt J/Psi or\nsuppression in hot medium. We will review CMS J/Psi measurements in pp\ncollisions at √sNN=7~TeV\, which al low precision studies of quarkonia\nproduction and serve as a reference fo r the observation of hot nuclear effects.\nCMS is able to distinguish non- prompt J/psi from prompt J/psi in PbPb\ncollisions\, and will present the prompt J/psi production cross-section in\nPbPb inclusively and as a functi on of transverse momentum\, rapidity and number\nof nucleons participating in the collision. Finally\, we compare the B fraction\nmeasured in PbPb c ollisions with that measured in pp at various energies. The\nLHC centre-of -mass energy allows copious Y production in PbPb\ncollisions. Detailed mea surements of bottomonium will help characterize the\ndense matter produced in heavy-ion collisions beyond what was accessible at\nRHIC (mostly) with charmonia. The full spectroscopy of quarkonium states has\nbeen suggested as a possible thermometer for the QGP. With its excellent dimuon mass res olution\, CMS has measured the three Y states in pp collisions.\nWith the 2010 PbPb data sample\, CMS has observed the Y(1S) as well as\nexcited sta tes. The $\\Upsilon(1S)$ cross-section is presented as a function of\ntran sverse momentum\, rapidity and centrality\, and excited state. Suppression of\nthe excited state in PbPb will be discussed.\n\nhttp://indico.cern.ch /contributionDisplay.py?contribId=81&sessionId=60&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=81&sessionId=60 &confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Correlations and fluctuations from lattice QCD DTSTART;VALUE=DATE-TIME:20110526T063000Z DTEND;VALUE=DATE-TIME:20110526T065500Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-87@cern.ch DESCRIPTION:Speakers: MUKHERJEE\, Swagato (Brookhaven National Laboratory) \nhttp://indico.cern.ch/contributionDisplay.py?contribId=87&sessionId=37&c onfId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=87&sessionId=37 &confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Femtoscopy of the system shape fluctuations in heavy ion collision s DTSTART;VALUE=DATE-TIME:20110524T150000Z DTEND;VALUE=DATE-TIME:20110524T152000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-587@cern.ch DESCRIPTION:Speakers: Prof. VOLOSHIN\, Sergei (Department of Physics and A stronomy-College of Science-Wayne Sta)\nThe system created in a heavy ion collision in general is not azimuthally symmetri\; moreover\, the initial spatial distribution\, e.g. that of the energy density\, fluctuates event- by-event even at fixed impact parameter. Because of particle interactions\ , this initial spatial asymmetry leads to anisotropies in particle emissio n -- the phenomenon called anisotropic flow. The best known anisotropy of this kind is the elliptic flow that is described by the second harmonic in particle azimuthal distribution. Recently\, the so-called triangular\, an d higher harmonic flow\, and in particular their sensitivity to the system initial conditions attracted a lot of attention\, as they might provide a dditional important information about the initial conditions and dynamical properties (e.g. viscosity) of the system.\n\nFluctuations in the initial geometry should be also reflected in the detail shape of the system at fr eeze-out. In this talk I discuss the possibility to measure such fluctuati ons by means of identical and non-identical particle femtoscopy. I support my conclusion on the sensitivity of the method to measure triangularity a nd higher harmonic spatial asymmetries by analytical calculations\, and by results from event generators and blast wave model calculations.\n\nhttp: //indico.cern.ch/contributionDisplay.py?contribId=587&sessionId=52&confId= 30248 LOCATION:Imperial Palace Rotonde de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=587&sessionId=5 2&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Elliptic and triangular flow of identified particles measured with the ALICE detector. DTSTART;VALUE=DATE-TIME:20110523T161000Z DTEND;VALUE=DATE-TIME:20110523T163000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-581@cern.ch DESCRIPTION:Speakers: KRZEWICKI\, Mikolaj (NIKHEF)\nThe anisotropic flow o f identified particles is an important observable to test the collective b ehavior of the matter created in heavy-ion collisions. We report on the fi rst measurements of elliptic and triangular flow for charged pions\, kaons and protons in lead-lead collisions at 2.76 TeV per nucleon pair center o f mass energy\, measured with the ALICE detector at the LHC. \n\nWe will m ake a detailed comparison of the observed mass splitting of v_{2} at LHC e nergies to RHIC measurements at lower energies. For identified particles w ith intermediate transverse momenta we test the quark coalescence picture with v_{2} and v_{3} scaled by the number of constituent quarks vs scaled p_{t} and scaled m_{t}.\n\nhttp://indico.cern.ch/contributionDisplay.py?co ntribId=581&sessionId=49&confId=30248 LOCATION:Imperial Palace Salle de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=581&sessionId=4 9&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Two-pion Bose-Einstein correlations in PbPb collisions at 2.76 TeV with ALICE DTSTART;VALUE=DATE-TIME:20110523T153000Z DTEND;VALUE=DATE-TIME:20110523T155000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-588@cern.ch DESCRIPTION:Speakers: MERCADO\, Jorge (Heidelberg University)\nWe present the first measurement of pion source radii in Pb-Pb\ncollisions at the LHC . The radii were obtained by analyzing the\nBose-Einstein enhancement in t wo-pion correlation functions. Like at lower energies\, the radii drop wit h increasing transverse momentum\, indicating the presence of collective e xpansion. In absolute terms\, all three radii (R_out\, R_side\, R_long) ar e larger than at RHIC\, roughly consistent with a linear scaling with the cube root of the particle multiplicity. The results\, taken together with those obtained from the study of the multiplicity and the azimuthal anisot ropy\, indicate that the fireball formed in nuclear collisions at the LHC is hotter\, lives longer\, and expands to a larger size as compared to low er energies.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=588 &sessionId=50&confId=30248 LOCATION:Imperial Palace Rotonde de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=588&sessionId=5 0&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Probing nuclear matter with jets and $\\gamma$-hadron correlations : results from PHENIX DTSTART;VALUE=DATE-TIME:20110524T150000Z DTEND;VALUE=DATE-TIME:20110524T152000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-589@cern.ch DESCRIPTION:Speakers: Dr. GRAU\, Nathan (Augustana College)\nFully reconst ructed jets and hadrons correlated with a direct photon significantly redu ce energy-loss bias\, the bias toward measuring particles from partons whi ch suffer little energy loss. In d+Au collisions\, one accesses the physic s at large $x$\, which yields important constraints for nuclear parton dis tribution functions. In both d+Au and A+A collisions\, coherent multiple-s cattering models of energy loss can be tested. In this contribution\, we p resent the current results from the PHENIX experiment on fully reconstruct ed jets and direct $\\gamma$-hadron correlations. Baseline measurements of jets in p+p collisions as well as their yield and correlation modificatio ns in d+Au and Cu+Cu will be given. From $\\gamma$-hadron correlations\, w e present the fragmentation function in p+p and Au+Au collisions and its m odification in Au+Au to lower $z_T$ than what has previously been studied. Implications of this data on our understanding of both cold and hot\, den se nuclear matter created at RHIC are discussed.\n\nhttp://indico.cern.ch/ contributionDisplay.py?contribId=589&sessionId=51&confId=30248 LOCATION:Imperial Palace Salle de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=589&sessionId=5 1&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Recent PHENIX results on open heavy flavor DTSTART;VALUE=DATE-TIME:20110527T134000Z DTEND;VALUE=DATE-TIME:20110527T140000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-519@cern.ch DESCRIPTION:Speakers: DURHAM\, J. Matthew (Stony Brook University)\nThroug hout the history of the RHIC physics program\, questions concerning the dy namics of heavy quarks have generated much experimental and theoretical in vestigation. A major focus of the PHENIX experiment is the measurement of these quarks through their semi-leptonic decay channels at mid and forwar d rapidity. \n\nHeavy quark measurements in p+p collisions give informa tion on the production of heavy flavor\, without complications from medium effects. New measurements in d+Au indicate significant and surprising co ld nuclear matter effects on these quarks at midrapidity\, and provide a n ew baseline for interpretation of the observed suppression in Au+Au collis ions. To complement the measured heavy quark spectra\, correlations betwe en heavy quark decay products give information on jet modification in nucl ear collisions\, while correlations between heavy quarks and hadrons produ ced in the same event can shed light on interactions with the medium. Whe n considered all together\, these measurements present a detailed study of nuclear matter across a wide range of system size and temperature. This talk will present new PHENIX measurements of non-photonic electron spectra and their centrality dependence in d+Au\, and discuss their implications on the current understanding of parton energy loss in the nuclear medium.\ n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=519&sessionId=53 &confId=30248 LOCATION:Imperial Palace Rotonde de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=519&sessionId=5 3&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Collision energy dependence of the flow and spectra results in Au+ Au collisions at $\\sqrt{s_{NN}}$ = 7.7-200 GeV from PHENIX DTSTART;VALUE=DATE-TIME:20110527T155000Z DTEND;VALUE=DATE-TIME:20110527T161000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-510@cern.ch DESCRIPTION:Speakers: GONG\, Xiaoyang (Stony Brook University)\nA central goal in experimental nuclear physics is to map out the QCD phase diagram\, and to measure precisely the properties of the different phases. In order to achieve this goal\, RHIC has embarked on an energy scan program involv ing gold nuclei at various energies. The data collected by the PHENIX expe riment for this program consists of data sets obtained at $\\sqrt{s_{NN}}$ = 200\, 62\, 39 and 7.7 GeV.\n\nThe analysis of these data\, have yielded a wealth of new soft physics results which are used in concert to probe r eaction dynamics and to constrain the transport coefficients of hot QCD ma tter. One particularly effective probe that is emphasized in this talk is the anisotropy of particle production\, characterized by flow coefficients $v_{2}$ and $v_{4}$. For Au+Au collisions at $\\sqrt{s_{NN}}$ = 200 GeV\, measurements indicate a hydrodynamic flow of hot QCD matter at the parton ic level with a small but finite value of the viscosity to entropy density ratio. However\, at sufficiently low collision energy (thus lower energy density and temperature)\, we expect this picture to break down. Therefore measurement of the collision energy dependence of $v_{2}$ and $v_{4}$ cou ld provide new insights to the current understanding of the nature of inte ractions in hot QCD matter.\n\nWe present new energy scan measurements of flow coefficients for both unidentified and identified particles\, as well as several other soft physics observables such as identified hadron spect ra and HBT correlations. The implications of these results will also be di scussed.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=510&ses sionId=72&confId=30248 LOCATION:Imperial Palace Salon Berlioz AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=510&sessionId=7 2&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Energy dependence of energy loss in Au+Au collisions at PHENIX DTSTART;VALUE=DATE-TIME:20110527T165000Z DTEND;VALUE=DATE-TIME:20110527T171000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-512@cern.ch DESCRIPTION:Speakers: NOVITZKY\, Norbert (Department of Physics-University of Jyvaskyla)\nThe suppression of inclusive pion production by up to a fa ctor of 5\, which was first observed in Au + Au at √sNN= 130 GeV/c (e.g. [1]) and later in Au + Au at √sNN= 200 GeV/c [2\, 3]\, is one of the mo st significant manifestations of the opaque QGP produced in heavy ion coll isions. The absence of this suppression in d + Au collisions at the same e nergy indicates the final state nature of the suppression. It is natural t o ask where the onset of such massive suppression is in terms of the energ y density of the medium which is dictated by the collision energy\, centra lity and the mass of colliding nuclei. The PHENIX collaboration has studie d collisions of lighter nuclei (Cu + Cu) at different beam energies in 200 5 [4]. While a significant suppression is observed both at √sNN = 200 an d 62.4 GeV\, at √sNN = 22.4 GeV a moderate enhancement is found. In 2010 RHIC scanned lower energies\, and PHENIX collected substantial data sets in Au + Au collisions at √sNN = 39 and 62 GeV. The goal was to identify better the conditions for the onset of the π0 suppression. This talk pres ents results from the systematic study of c.m. energy and the system size dependencies of π0 yield and the nuclear modification factor.\nReferences \n[1] K. Adcox et al.\, Phys.Rev.Lett. 88\, 022301 (2002). \n[2] S. S. Adl er et al.\, Phys.Rev.Lett. 96\, 202301 (2006). \n[3] A. Adare et al.\, Phy s.Rev.Lett. 101\, 232301 (2008). \n[4] A. Adare et al.\, Phys.Rev.Lett. 10 1\, 162301 (2008).\n\nhttp://indico.cern.ch/contributionDisplay.py?contrib Id=512&sessionId=72&confId=30248 LOCATION:Imperial Palace Salon Berlioz AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=512&sessionId=7 2&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Validity of the hadronic freeze-out curve DTSTART;VALUE=DATE-TIME:20110523T140000Z DTEND;VALUE=DATE-TIME:20110523T142000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-516@cern.ch DESCRIPTION:Speakers: STOCK\, Reinhard (Institut fuer Kernphysik - Johann- Wolfgang-Goethe Univ.)\nIn nucleus-nucleus collisions we distinguish early hadro-chemical freeze-out\, fixing hadronic concentrations\, and final ki netic freeze-out to spectral and flow features\, occuring at the end of th e hadronic "cascade" phase. This view has been adopted in all recent analy sis of hadron production rates\, which are well described in the grand can onical statistical equilibrium model. The derived freeze-out systematics i n the (T\,mu(B)) plane occurs in all present sketches of the QCD matter ph ase diagram. It merges with the lattice QCD parton-hadron coexistence line at small mu(B).\n\nThe preservation of the equilibrium pattern of hadroni c yields (established in the close vicinity of hadronization) throughout t he final hadronic expansion phase still remains to be explained\, and subs tantiated.\nIn order to systematically assess the effect of the hadronic c ascade stage we employ the hybrid version of the UrQMD transport model. In it\, a high density hydrodynamic evolution stage is matched\, via the Coo per-Frye formalism\, to the final hadron/resonance expansion evolution. Ma tching occurs at a fixed critical energy density. These calculations are c arried out at the energies covered by the\nSPS Pb+Pb program\, 6.3 \n\nhtt p://indico.cern.ch/contributionDisplay.py?contribId=516&sessionId=6&confId =30248 LOCATION:Imperial Palace Salon Haendel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=516&sessionId=6 &confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Bottomonium production measured in PbPb and pp collisions by CMS DTSTART;VALUE=DATE-TIME:20110523T171000Z DTEND;VALUE=DATE-TIME:20110523T173000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-450@cern.ch DESCRIPTION:Speakers: HU\, Zhen (Purdue University)\nThe LHC centre-of-mas s energy allows copious $\\Upsilon$ production in PbPb collisions. Detaile d measurements of bottomonium will help characterize the dense matter prod uced in heavy-ion collisions beyond what was accessible at RHIC (mostly) w ith charmonia. The full spectroscopy of quarkonium states has been suggest ed as a possible thermometer for the QGP. With its excellent dimuon mass r esolution\, CMS has measured the three $\\Upsilon$ states in pp collisions . With the 2010 PbPb data sample\, CMS has observed the $\\Upsilon$. The $ \\Upsilon(1S)$ cross-section is presented as a function of transverse mome ntum\, rapidity and centrality.\n\nhttp://indico.cern.ch/contributionDispl ay.py?contribId=450&sessionId=98&confId=30248 LOCATION:ImpErial Palace Salon Ravel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=450&sessionId=9 8&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Observation of a ridge correlation structure in high multiplicity pp collisions with CMS DTSTART;VALUE=DATE-TIME:20110523T130000Z DTEND;VALUE=DATE-TIME:20110523T132000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-451@cern.ch DESCRIPTION:Speakers: VELICANU\, Dragos (MIT)\nResults on two-particle ang ular correlations are presented in proton-proton collisions at center of m ass energies of 0.9\, 2.36\, 2.76 and 7 TeV\, over a broad range of pseudo rapidity and azimuthal angle. In very high multiplicity events at 7 TeV\, a pronounced structure emerges in the two-dimensional correlation function for particle pairs with intermediate $p_T$ of 1-3 GeV/c\, in the kinemati c region 2.0 $\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=4 51&sessionId=46&confId=30248 LOCATION:Imperial Palace Rotonde de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=451&sessionId=4 6&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Dihadron correlations in PbPb collisions at $\\sqrt{s_{_{NN}}}$ = 2.76 TeV with CMS DTSTART;VALUE=DATE-TIME:20110524T132000Z DTEND;VALUE=DATE-TIME:20110524T134000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-452@cern.ch DESCRIPTION:Speakers: CALLNER\, Jeremy Louis (Physics Department-Universit y of Illinois at Chicago)\nMeasurements of charged dihadron correlations f rom the CMS collaboration are presented for PbPb collisions at a center-of -mass energy of 2.76 TeV per nucleon pair over a broad range of pseudorapi dity and the full range of azimuthal angle. With its large pseudorapidity coverage (|$\\eta$|1$) dihadron correlation is observed at all $\\Delta\\e ta$ when compared to pp collisions. A significant correlated yield is obse rved for pairs of particles with small $\\Delta\\phi$ but large longitudin al separation $\\Delta\\eta$\, commonly known as the ``ridge''. The ridge persists up to at least $|\\Delta\\eta| = 4$ and its effect is found to be stronger than what was previously observed at RHIC. The dependence of the ridge region shape and yield on transverse momentum and collision central ity has been measured. For particles of transverse momentum of 2--4 GeV/$c $\, the ridge is found to be the most prominent when correlated to particl es of 2--6 GeV/$c$\, but disappears when correlated to 8--10 GeV/$c$ parti cles. A Fourier analysis of the long-range two-particle correlations will be presented and discussed in the context of CMS measurements of higher or der flow coefficients.\n\nhttp://indico.cern.ch/contributionDisplay.py?con tribId=452&sessionId=52&confId=30248 LOCATION:Imperial Palace Rotonde de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=452&sessionId=5 2&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Suppression of high p_T hadrons in PbPb Collisions at LHC DTSTART;VALUE=DATE-TIME:20110526T140000Z DTEND;VALUE=DATE-TIME:20110526T142000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-176@cern.ch DESCRIPTION:Speakers: Prof. ZHANG\, Hanzhong (IOPP\, Wuhan)\nNuclear modif ication factor $R_{AA}(p_{T})$ for large transverse momentum pion spectra in $Pb+Pb$ collisions at $\\sqrt{s}=2.76$ TeV is predicted within the NLO perturbative QCD parton model. Effect of jet quenching is incorporated thr ough medium modified fragmentation functions within the higher-twist appro ach. The jet transport parameter that controls medium modification is prop ortional to the initial parton density and the coefficient is fixed by the RHIC data on suppression of large $p_{T}$ hadron spectra. Data on charged hadron multiplicity $dN_{ch}/d\\eta=1584 \\pm 80$ in central $Pb+Pb$ coll isions from the ALICE Experiment at the LHC are used to constrain the init ial parton density both for determining the jet transport parameter and th e 3+1D ideal hydrodynamic evolution of the bulk matter that is employed fo r the calculation of $R_{PbPb}(p_{T})$ for neutral pions\n\nhttp://indico. cern.ch/contributionDisplay.py?contribId=176&sessionId=61&confId=30248 LOCATION:Centre Bonlieu Salle de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=176&sessionId=6 1&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Jets\, mach cone\, hot spots\, ridges\, harmonic flow\, dihadron a nd $\\gamma$-hadron correlations in high-energy heavy-ion collisions DTSTART;VALUE=DATE-TIME:20110527T144000Z DTEND;VALUE=DATE-TIME:20110527T150000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-173@cern.ch DESCRIPTION:Speakers: Dr. MA\, Guo-Liang (Shanghai Institute of Applied Ph ysics\, Chinese Academy of Sciences\, P.O. Box 800-204\, Shanghai 201800\, China)\nWithin the AMPT Monte Carlo model\, fluctuations in the initial t ransverse parton density are shown to lead to harmonic flows. The net back -to-back dihadron azimuthal correlation after subtraction of contributions from harmonic flows still has a double peak that is independent of the in itial geometric triangularity and unique to the jet-induced Mach cone and expanding hot spots distorted by radial flow. The longitudinal structure o f hot spots also leads to a near-side ridge in dihadron correlation with a large rapidity gap. By successively randomizing the azimuthal angle of th e transverse momenta and positions of initial partons\, one can isolate th e effects of jet-induced medium excitation and expanding hot spots on the dihadron azimuthal correlation. The double peaks in the net dihadron and $ \\gamma$-hadron correlation are quantitatively different since the later i s caused only by jet-induced Mach cone.\n\nReference:\n[1] Guo-Liang Ma an d Xin-Nian Wang\, arXiv:1011.5249\n\nhttp://indico.cern.ch/contributionDis play.py?contribId=173&sessionId=66&confId=30248 LOCATION:Imperial Palace Salon Verdi AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=173&sessionId=6 6&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Quarkonium production at the LHC: QCD corrections and new observab les DTSTART;VALUE=DATE-TIME:20110524T144000Z DTEND;VALUE=DATE-TIME:20110524T150000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-172@cern.ch DESCRIPTION:Speakers: Dr. LANSBERG\, Jean-Philippe (IPNO\, Université Par is-Sud 11)\nI will discuss the impact of QCD corrections on the P_T differ ential cross section for quarkonium production in pp collisions at RHIC\, Tevatron and LHC energies\, as well as the contributions from charm-gluon fusion. I will present comparisons between the predictions of the Color Si nglet Model up to alpha_s^5 with the first LHC data both for J/psi and Ups ilon. I will also show predictions for the polarisation to be compared wit h the forthcoming LHC results. Finally\, I will motivate the introduction of new observables meant to better discriminate between the different mech anisms at work in quarkonium production at the LHC.\n\nhttp://indico.cern. ch/contributionDisplay.py?contribId=172&sessionId=63&confId=30248 LOCATION:Imperial Palace Salon Ravel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=172&sessionId=6 3&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Proposal for QM13/14 in Bologna DTSTART;VALUE=DATE-TIME:20110525T142000Z DTEND;VALUE=DATE-TIME:20110525T144000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-656@cern.ch DESCRIPTION:Speakers: CIFARELLI-STROLIN\, Luisa (Dipartimento di Fisica)\n http://indico.cern.ch/contributionDisplay.py?contribId=656&sessionId=84&co nfId=30248 LOCATION:Imperial Palace Salon Ravel B URL:http://indico.cern.ch/contributionDisplay.py?contribId=656&sessionId=8 4&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Proposal for QM13/14 in Darmstadt DTSTART;VALUE=DATE-TIME:20110525T140000Z DTEND;VALUE=DATE-TIME:20110525T142000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-654@cern.ch DESCRIPTION:Speakers: BRAUN-MUNZINGER\, Peter (Gesellschaft fuer Schwerion enforschung mbH (GSI))\nhttp://indico.cern.ch/contributionDisplay.py?contr ibId=654&sessionId=84&confId=30248 LOCATION:Imperial Palace Salon Ravel B URL:http://indico.cern.ch/contributionDisplay.py?contribId=654&sessionId=8 4&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Charged-particle multiplicity\, centrality and the Glauber model w ith ALICE at 2.76 ATeV DTSTART;VALUE=DATE-TIME:20110523T132000Z DTEND;VALUE=DATE-TIME:20110523T134000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-599@cern.ch DESCRIPTION:Speakers: LOIZIDES\, Constantinos (Lawrence Berkeley National Lab. (LBNL))\nThe measurements of charged-particle multiplicity and transv erse energy\nin Pb-Pb collisions at 2.76 ATeV are reported as a function o f centrality. The fraction of inelastic cross section seen by the ALICE de tector is estimated using a Glauber model or correcting the data by simula tions. The results scaled by the number of participating nucleons are comp ared with pp collisions at the same collision energy and to similar result s obtained at the significantly lower energies\, and with models based on different mechanisms for particle production in nuclear collisions. Partic ular emphasis will be given to a discussion on systematic studies of the d ependence of the centrality determination on the Glauber model\, and the v alidity of the Glauber model at 2.76 TeV.\n\nhttp://indico.cern.ch/contrib utionDisplay.py?contribId=599&sessionId=45&confId=30248 LOCATION:Imperial Palace Salle de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=599&sessionId=4 5&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Can we see from jet quenching that quark-gluon plasma becomes more perturbative at LHC than at RHIC DTSTART;VALUE=DATE-TIME:20110527T165000Z DTEND;VALUE=DATE-TIME:20110527T171000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-181@cern.ch DESCRIPTION:Speakers: ZAKHAROV\, Bronislav (Landau Institute)\nWe study th e nuclear modification factor R_AA at RHIC and LHC energies. We account fo r the radiative and collisional energy losses. Both the contributions are calculated with running \\alpha_s accounting for fluctuations of the jet p ath lengths. The effect of the thermal suppression of \\alpha_s is investi gated. Comparison of the theoretical results with the experimental data ob tained at RHIC and in the ALICE experiment at LHC demonstrates that the ex perimental R_AA may be described in pQCD with the entropy extracted from t he multiplicity data. However for LHC the thermal suppression of \\alpha_s should be stronger. This fact demonstrates that at LHC the quark-gluon pl asma becomes more perturbative.\n\nhttp://indico.cern.ch/contributionDispl ay.py?contribId=181&sessionId=74&confId=30248 LOCATION:Imperial Palace Salon Verdi AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=181&sessionId=7 4&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Preparation of QM2012 at Washington DTSTART;VALUE=DATE-TIME:20110525T132000Z DTEND;VALUE=DATE-TIME:20110525T134000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-653@cern.ch DESCRIPTION:Speakers: HARRIS\, John (Yale)\, ULLRICH\, Thomas (Brookhaven National Laboratory)\, KHARZEEV\, Dima ()\nhttp://indico.cern.ch/contribut ionDisplay.py?contribId=653&sessionId=84&confId=30248 LOCATION:Imperial Palace Salon Ravel B URL:http://indico.cern.ch/contributionDisplay.py?contribId=653&sessionId=8 4&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Enhancement of thermal photon production in event-by-event hydrody namics DTSTART;VALUE=DATE-TIME:20110526T142000Z DTEND;VALUE=DATE-TIME:20110526T144000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-184@cern.ch DESCRIPTION:Speakers: CHATTERJEE\, Rupa (University of Jyvaskyla)\nThermal photon emission is widely believed to reflect properties of the earliest\ , hottest evolution stage of the medium created in ultra-relativistic heav y-ion collisions. Previous computations of photon emission have been carri ed out using a hydrodynamical medium description with smooth\, averaged in itial conditions. Recently\, more sophisticated hydrodynamical models whic h calculate observables by averaging over many evolutions with event-by-ev ent fluctuating initial conditions (IC) have been developed. Given their d irect connection to the early time dynamics\, thermal photon emission appe ars an ideal observable to probe fluctuations in the medium initial state. In this work\, we demonstrate that including fluctuations in the IC may l ead to an enhancement of the thermal photon yield of about a factor of 2 i n the region $2 \n\nhttp://indico.cern.ch/contributionDisplay.py?contribId =184&sessionId=71&confId=30248 LOCATION:Imperial Palace Salon Ravel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=184&sessionId=7 1&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Proposal for QM13/14 in Japan DTSTART;VALUE=DATE-TIME:20110525T134000Z DTEND;VALUE=DATE-TIME:20110525T140000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-652@cern.ch DESCRIPTION:Speakers: Prof. HAMAGAKI\, Hideki (Graduate School of Science -University of Tokyo)\, SHIGAKI\, Kenta (Hiroshima University)\nhttp://ind ico.cern.ch/contributionDisplay.py?contribId=652&sessionId=84&confId=30248 LOCATION:Imperial Palace Salon Ravel B URL:http://indico.cern.ch/contributionDisplay.py?contribId=652&sessionId=8 4&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Initial conditions - Theory perspectives DTSTART;VALUE=DATE-TIME:20110524T063000Z DTEND;VALUE=DATE-TIME:20110524T065500Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-185@cern.ch DESCRIPTION:Speakers: LOPEZ ALBACETE\, Javier (IPhT CEA/Saclay)\nhttp://in dico.cern.ch/contributionDisplay.py?contribId=185&sessionId=8&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=185&sessionId=8 &confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Lattice QCD based equation of state at finite baryon density DTSTART;VALUE=DATE-TIME:20110524T142000Z DTEND;VALUE=DATE-TIME:20110524T144000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-327@cern.ch DESCRIPTION:Speakers: Dr. HUOVINEN\, Pasi (Johann Wolfgang Goethe-Universi tät)\nThe effects of non-zero baryon density are expected to become impor tant\nin hydrodynamic modeling of heavy collisions below the highest energ y at RHIC. Recent calculations in effective models and in QCD using Dyson Schwinger equation suggest that the transition in QCD remains a crossover up to baryon chemical potentials of about 800MeV [1]. If so\, the equation of state relevant for hydrodynamic models can be calculated on the lattic e using Taylor expansion. However\, there are large cutoff effects in pres ent lattice calculations for non-zero chemical potentials.\n\nWe employ th e lattice QCD data on Taylor expansion coefficients [2] to extend our prev ious parametrization of the equation of state [3] to finite baryon density . When we take into account lattice spacing and quark mass dependence of t he hadron masses [3]\, the Taylor coefficients at low temperature are equa l to those of hadron resonance gas. Therefore we require require that the equation of state is smoothly connected to the hadron resonance gas equati on of state at low temperatures. Some preliminary results were reported in [4]. \nWe also show how the hydrodynamical evolution is affected by this equation of state in the energy range relevant for SPS and the RHIC energy scan.\n\n[1] T.K. Herbst et al\, Phys. Lett. B696 (2011)\;\n C.S. Fisc her et al\, arXiv:1104.1564\n\n[2] M. Cheng et al\, Phys. Rev. D79 (2009) 074505\;\n C Miao and C. Schmidt\,PoS LATTICE2008 (2008) 172\n\n[3] P.H uovinen and P.Petreczky\, Nucl.Phys. A837 (2010) 26\n\n[4] P.Huovinen and P.Petreczky\, J. Phys. Conf. Ser. 230 (2010) 012012\n\nhttp://indico.cern. ch/contributionDisplay.py?contribId=327&sessionId=54&confId=30248 LOCATION:Imperial Palace Salon Haendel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=327&sessionId=5 4&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Jet-Hadron Correlations in STAR DTSTART;VALUE=DATE-TIME:20110527T161000Z DTEND;VALUE=DATE-TIME:20110527T163000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-324@cern.ch DESCRIPTION:Speakers: OHLSON\, Alice (Yale University)\nIn recent years\, the study of dihadron correlations has been one of the primary methods use d to investigate the propagation and modification of hard-scattered parton s in the QGP. Due to recent advancements in jet-finding algorithms it is now possible to use reconstructed jets in these correlation studies. This increases the kinematic reach of such analyses and improves the signal-to -background ratio. \n\nWe show results of a systematic study of jet-hadro n correlations in 200 GeV central Au+Au collisions\, which are indicative of a broadening and softening of jets which interact with the medium. Fur thermore\, jet-hadron correlations suggest that the suppression of the ass ociated hadron yield at high-$p_{T}$ is balanced by low-$p_{T}$ enhancemen t.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=324&sessionId =74&confId=30248 LOCATION:Imperial Palace Salon Verdi AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=324&sessionId=7 4&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Quarkonium measurements at the LHC with the ALICE detector DTSTART;VALUE=DATE-TIME:20110527T085500Z DTEND;VALUE=DATE-TIME:20110527T091000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-201@cern.ch DESCRIPTION:Speakers: MARTINEZ-GARCIA\, Gines (Laboratoire de Physique Sub atomique et des Technologies Associees)\nALICE detector has excellent perf ormances to study quarkonium production in\nheavy-ion collisions at the LH C collider [1]. In this new energy regime\, charmonium could reveal a priv ileged probe to study the properties of the high-density strongly interact ing system formed in the early stages of high-energy heavy-ion collisions [2].\nBottomonium resonances will be abundantly produced\, providing new c onstrains on theoretical models of quarkonium dissociation in QCD matter [ 1]. Additionally\, ALICE will study quarkonium production in proton-proton collisions in which high particle multiplicity events could lead to the f ormation of high energy density matter as in heavy ions collisions [3].\nI n ALICE [4]\, quarkonium is measured down to pT = 0 via their mu+mu− dec ay channels in the ALICE muon spectrometer and via their e+e- in the ALICE central barrel. After a short description of the apparatus\, the transver se momentum and rapidity distributions of inclusive J/Psi production cross section in proton-proton collisions at LHC energies will be presented. We will discuss the dependence on charged particle multiplicity of J/Psi yie ld in proton-proton collisions at sqrt(s) = 7 TeV.\nThe number of reconstr ucted tracklets (η\n\nhttp://indico.cern.ch/contributionDisplay.py?contri bId=201&sessionId=60&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=201&sessionId=6 0&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Common discussion with 3 speakers DTSTART;VALUE=DATE-TIME:20110527T075000Z DTEND;VALUE=DATE-TIME:20110527T080000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-200@cern.ch DESCRIPTION:Speakers: KHARZEEV\, Dima (Brookhaven National Laboratory)\nht tp://indico.cern.ch/contributionDisplay.py?contribId=200&sessionId=59&conf Id=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=200&sessionId=5 9&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Common discussion with 2 speakers DTSTART;VALUE=DATE-TIME:20110527T091000Z DTEND;VALUE=DATE-TIME:20110527T092000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-202@cern.ch DESCRIPTION:Speakers: KHARZEEV\, Dmitri (Stony Brook U./BNL)\nhttp://indic o.cern.ch/contributionDisplay.py?contribId=202&sessionId=60&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=202&sessionId=6 0&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:NA49/NA61: SPS results on fluctuations & correlations DTSTART;VALUE=DATE-TIME:20110526T072000Z DTEND;VALUE=DATE-TIME:20110526T074000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-207@cern.ch DESCRIPTION:Speakers: GAZDZICKI\, Marek (Frankfurt University)\nhttp://ind ico.cern.ch/contributionDisplay.py?contribId=207&sessionId=37&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=207&sessionId=3 7&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:STAR: results from the beam energy scan program DTSTART;VALUE=DATE-TIME:20110526T065500Z DTEND;VALUE=DATE-TIME:20110526T072000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-206@cern.ch DESCRIPTION:Speakers: MOHANTY\, Bedangadas (Variable Energy Cyclotron Cent re\, Kolkata)\nhttp://indico.cern.ch/contributionDisplay.py?contribId=206& sessionId=37&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=206&sessionId=3 7&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Correlations and fluctuations measured by the CMS experiment in pp and PbPb collisions DTSTART;VALUE=DATE-TIME:20110526T091500Z DTEND;VALUE=DATE-TIME:20110526T094000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-209@cern.ch DESCRIPTION:Speakers: LI\, Wei (MIT)\nMeasurements of charged dihadron ang ular correlations are presented in\nproton-proton (pp) and Lean-Lead (PbPb ) collisions\, over a broad range of\npseudorapidity and azimuthal angle\, using the CMS detector at the LHC. In very\nhigh multiplicity pp events a t center-of-mass energy of 7 TeV\, a striking\n"ridge"-like structure emer ges in the two-dimensional correlation function for\nparticle pairs with i ntermediate pT of 1-3 GeV/c\, in the kinematic region 2.0 \n\nhttp://indic o.cern.ch/contributionDisplay.py?contribId=209&sessionId=37&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=209&sessionId=3 7&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Production of identified particles in pp and PbPb collisions at LH C energies with the ALICE detector DTSTART;VALUE=DATE-TIME:20110526T074000Z DTEND;VALUE=DATE-TIME:20110526T080000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-208@cern.ch DESCRIPTION:Speakers: FLORIS\, Michele (CERN)\nThe ALICE experiment is tak ing data since 2009\, with proton and lead beams. In this talk\, we revie w the different particle identification techniques used by the experiment and the excellent performance during the first year of data taking. We sum marize the current results on identified particle spectra in pp collisions at sqrt(s) = 900 GeV and 7 TeV\, and in Pb-Pb collisions at sqrt(s_NN) = 2.76 TeV. In particular\, the energy dependence of the spectral shapes of the pp data is discussed and the results are compared to previous experim ents and commonly used Monte Carlo models. The evolution of the particle s pectra in PbPb with collision centrality is presented. Various particle ra tios are shown\, including the baryon/meson ratio (Lambda/K0s). Finally\, we conclude with an overview of the ongoing analyzes on identified particl es.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=208&sessionI d=37&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=208&sessionId=3 7&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Monte Carlo tools for jet quenching DTSTART;VALUE=DATE-TIME:20110525T085000Z DTEND;VALUE=DATE-TIME:20110525T091500Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-77@cern.ch DESCRIPTION:Speakers: ZAPP\, Korinna (University of Heidelberg)\nhttp://in dico.cern.ch/contributionDisplay.py?contribId=77&sessionId=20&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=77&sessionId=20 &confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Particle production at large transverse momentum with ALICE DTSTART;VALUE=DATE-TIME:20110525T063000Z DTEND;VALUE=DATE-TIME:20110525T065500Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-76@cern.ch DESCRIPTION:Speakers: APPELSHAEUSER\, Harald (Johann-Wolfgang-Goethe Univ. )\nWe present transverse momentum distributions of charged particles and i dentified hadrons in pp and Pb-Pb collisions\, measured by ALICE at the LH C. The Pb-Pb data are presented in intervals of the collision centrality a nd cover transverse momenta up to 50 GeV/c. Nuclear medium effects are stu died in terms of the nuclear modification factor R_AA. The results indicat e strong suppression of high-p_T particles in Pb-Pb collisions\, consisten t with a large energy loss of hard-scattered partons in the hot\, dense\, and long-lived medium created at the LHC.\n\nhttp://indico.cern.ch/contrib utionDisplay.py?contribId=76&sessionId=19&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=76&sessionId=19 &confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Quenching of single hadron and photon spectra from RHIC to LHC DTSTART;VALUE=DATE-TIME:20110525T073500Z DTEND;VALUE=DATE-TIME:20110525T080000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-75@cern.ch DESCRIPTION:Speakers: ARLEO\, Francois (lapp-Laboratoire d'Annecy-le-Vieux de Physique des Particules-In)\nI will discuss the generic features of pa rton energy loss effects on the quenching of large-pT hadrons\, as well as more quantitative studies. The differences expected from RHIC to LHC will be highlighted. The quenching of prompt photons will also be discussed in detail. Finally\, I will stress the need for precise baseline measurement s of hadrons and photons in pp and pPb collisions.\n\nhttp://indico.cern.c h/contributionDisplay.py?contribId=75&sessionId=19&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=75&sessionId=19 &confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Flow measurements from the CMS experiment DTSTART;VALUE=DATE-TIME:20110524T090500Z DTEND;VALUE=DATE-TIME:20110524T092500Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-74@cern.ch DESCRIPTION:Speakers: VELKOVSKA\, Julia (Vanderbilt University)\nWe report on the CMS measurements of charged hadron anisotropic azimuthal\ndistribu tions from PbPb collisions at √sNN= 2.76 TeV and their\ndecomposition in to a Fourier series up to the 6th coefficient. The results are\npresented as a function of transverse momentum\, centrality and pseudorapidity\nand cover a broad kinematic range. The relation between the different harmonic \ncoefficients and the scaling with the respective participant eccentricit y are\nstudied. These results could provide constraints on the theoretical description\nof the early dynamics in the hot and dense medium and its tr ansport properties.\n\nhttp://indico.cern.ch/contributionDisplay.py?contri bId=74&sessionId=9&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=74&sessionId=9& confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Anisotropic flow from ALICE DTSTART;VALUE=DATE-TIME:20110524T094500Z DTEND;VALUE=DATE-TIME:20110524T101000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-73@cern.ch DESCRIPTION:Speakers: SNELLINGS\, Raimond (Nikhef\, Amsterdam\,The Netherl ands)\nWe report on the measurements of anisotropic flow with the ALICE de tector at the LHC. For charged particles we present the first triangular\ , quadrangular and pentagonal flow measurements. The flow of charged and i dentified particles is compared to hydrodynamic model predictions at low-p _t and for identified particles at intermediate-p_t the so-called number of constituent quark scaling is investigated. At higher transverse moment um we compare the elliptic flow results with expectation from parton energ y loss.\nFor the integrated elliptic flow we show the scaling with the ini tial eccentricity and we quantify the magnitude of the event by event fluc tuations.\nThese results indicate strong collective flow and are consisten t with expectations for the created hot and dense system created at the LH C.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=73&sessionId= 9&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=73&sessionId=9& confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Common discussion with 3 speakers DTSTART;VALUE=DATE-TIME:20110524T073500Z DTEND;VALUE=DATE-TIME:20110524T075000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-72@cern.ch DESCRIPTION:Speakers: MUELLER\, Bernd (Duke University)\nhttp://indico.cer n.ch/contributionDisplay.py?contribId=72&sessionId=8&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=72&sessionId=8& confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Bulk properties of PbPb collisions at the LHC measured by ALICE DTSTART;VALUE=DATE-TIME:20110524T065500Z DTEND;VALUE=DATE-TIME:20110524T071500Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-71@cern.ch DESCRIPTION:Speakers: Dr. TOIA\, Alberica (Organisation européenne pour l a recherche nucléaire (CERN))\nGlobal variables\, such as the charged par ticle multiplicity and the transverse energy are important observables to characterize Relativistic Heavy Ion collisions and to constrain model calc ulations. The charged-particle multiplicity dNch/deta(eta=0) and transvers e energy dEt/deta(eta=0) are measured at sqrt(s_NN)=2.76TeV in Pb-Pb colli sions as a function of centrality and in p-p collisions. The fraction of i nelastic cross section seen by the ALICE detector is calculated either usi ng a Glauber model or the data corrected by simulations of nuclear and EM processes\, or data collected with a minimum bias interaction trigger. The centrality\, defined by the number of nucleons participating in the colli sion\, is obtaine\, via the Glauber model\, by relating the multiplicity distributions of various detectors in the ALICE Central Barrel and their c orrelation with the spectator energy measured by the Zero-Degree Calorimet ers.\nThe results are compared to corresponding results obtained at the si gnificantly lower energies of the BNL AGS\, the CERN SPS\, and the BNL RHI C\, and with models based on different mechanisms for particle production in nuclear collisions. Particular emphasis will be given to a discussion o n systematic studies of the dependence of the centrality determination on the Glauber model\, and the validity of the Glauber model at unprecedented collision energies.\n\nhttp://indico.cern.ch/contributionDisplay.py?contr ibId=71&sessionId=8&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=71&sessionId=8& confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Leptonic observables in sqrt(s_NN)=2.76 TeV PbPb collisions measur ed with the ATLAS detector at the LHC DTSTART;VALUE=DATE-TIME:20110526T132000Z DTEND;VALUE=DATE-TIME:20110526T134000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-655@cern.ch DESCRIPTION:Speakers: Dr. SANDSTRÖM\, Rikard (Max Planck Institut)\nA bro ad program of measurements using heavy ion collisions is underway in ATLAS \, with the aim of studying the properties of QCD matter at high temperatu res and densities. Leptonic observables are essential tools for the study of heavy ion collisions since leptons do not interact strongly and thus pa ss through the strongly-coupled medium unaffected. The centrality depende nce of J/psi and Z yields\, observed through their di-muon channel\, are important measurements both for assessing modifications of particle produc tion as well as probing particular regions of the nuclear PDFs. W boson measurements are also possible using single leptons\, and provide another handle on the initial state.\nThis talk describes measurements performed using up to 9 µb-1 of lead-lead collision data provided at a nucleon-nucl eon center-of-mass energy of 2.76 GeV by the Large Hadron Collider and col lected by the ATLAS Detector during November and December 2010\n\nhttp://i ndico.cern.ch/contributionDisplay.py?contribId=655&sessionId=71&confId=302 48 LOCATION:Imperial Palace Salon Ravel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=655&sessionId=7 1&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Applying the AdS/CFT correspondence to non-abelian plasmas DTSTART;VALUE=DATE-TIME:20110527T063000Z DTEND;VALUE=DATE-TIME:20110527T070000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-79@cern.ch DESCRIPTION:Speakers: MATEOS\, David (ICREA & U. Barcelona)\nhttp://indico .cern.ch/contributionDisplay.py?contribId=79&sessionId=59&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=79&sessionId=59 &confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:STAR on reconstructed jets and jet-like correlations DTSTART;VALUE=DATE-TIME:20110525T091500Z DTEND;VALUE=DATE-TIME:20110525T093500Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-78@cern.ch DESCRIPTION:Speakers: CAINES\, Helen Louise (Yale University-Unknown-Unkno wn)\nhttp://indico.cern.ch/contributionDisplay.py?contribId=78&sessionId=2 0&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=78&sessionId=20 &confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Local Parity Violation or Local Charge Conservation/Flow? DTSTART;VALUE=DATE-TIME:20110527T100000Z DTEND;VALUE=DATE-TIME:20110527T101000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-669@cern.ch DESCRIPTION:Speakers: WANG\, Hui (Michigan state university)\nhttp://indic o.cern.ch/contributionDisplay.py?contribId=669&sessionId=82&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=669&sessionId=8 2&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Dimuon radiation at the CERN SPS within a hybrid evolution model DTSTART;VALUE=DATE-TIME:20110527T095000Z DTEND;VALUE=DATE-TIME:20110527T100000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-668@cern.ch DESCRIPTION:Speakers: SANTINI\, Elvira (Frankfurt University)\nhttp://indi co.cern.ch/contributionDisplay.py?contribId=668&sessionId=82&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=668&sessionId=8 2&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Probing nuclear parton densities and parton energy loss processes through photon + heavy-quark jet production in p-A and A-A collisions DTSTART;VALUE=DATE-TIME:20110527T094000Z DTEND;VALUE=DATE-TIME:20110527T095000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-667@cern.ch DESCRIPTION:Speakers: STAVREVA\, Tzvetalina (LPSC)\nhttp://indico.cern.ch/ contributionDisplay.py?contribId=667&sessionId=82&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=667&sessionId=8 2&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Measurement of the Nuclear Modification Factor of Electrons from H eavy Flavour Decays at Mid-Rapidity in Pb-Pb Collisions at 2.76 TeV with ALICE DTSTART;VALUE=DATE-TIME:20110527T093000Z DTEND;VALUE=DATE-TIME:20110527T094000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-666@cern.ch DESCRIPTION:Speakers: PACHMAYER\, Yvonne Chiara (Ruprecht-Karls-Universita et Heidelberg)\nhttp://indico.cern.ch/contributionDisplay.py?contribId=666 &sessionId=82&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=666&sessionId=8 2&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:First measurement of Upsilon suppression DTSTART;VALUE=DATE-TIME:20110527T092000Z DTEND;VALUE=DATE-TIME:20110527T093000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-664@cern.ch DESCRIPTION:Speakers: REED\, Rosi (STAR)\nhttp://indico.cern.ch/contributi onDisplay.py?contribId=664&sessionId=82&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=664&sessionId=8 2&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:First B→J/ψ measurement in PbPb collisions at 2.76 TeV with the CMS detector DTSTART;VALUE=DATE-TIME:20110527T103000Z DTEND;VALUE=DATE-TIME:20110527T104000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-663@cern.ch DESCRIPTION:Speakers: JO\, Mihee (Korea University (KR))\nhttp://indico.ce rn.ch/contributionDisplay.py?contribId=663&sessionId=82&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=663&sessionId=8 2&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:QM2011 DTSTART;VALUE=DATE-TIME:20110525T130000Z DTEND;VALUE=DATE-TIME:20110525T132000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-662@cern.ch DESCRIPTION:Speakers: SCHUTZ\, Yves (IN2P3/CERN)\nhttp://indico.cern.ch/co ntributionDisplay.py?contribId=662&sessionId=84&confId=30248 LOCATION:Imperial Palace Salon Ravel B URL:http://indico.cern.ch/contributionDisplay.py?contribId=662&sessionId=8 4&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Proposal for a QM in Brazil DTSTART;VALUE=DATE-TIME:20110525T144000Z DTEND;VALUE=DATE-TIME:20110525T145000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-661@cern.ch DESCRIPTION:Speakers: TAKESHI\, Kodama ()\nhttp://indico.cern.ch/contribut ionDisplay.py?contribId=661&sessionId=84&confId=30248 LOCATION:Imperial Palace Salon Ravel B URL:http://indico.cern.ch/contributionDisplay.py?contribId=661&sessionId=8 4&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Charge dependent azimuthal correlations in PbPb collisions at $\\s qrt{s_{NN}} = 2.76$~TeV DTSTART;VALUE=DATE-TIME:20110527T134000Z DTEND;VALUE=DATE-TIME:20110527T140000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-540@cern.ch DESCRIPTION:Speakers: Dr. CHRISTAKOGLOU\, Panos (NIKHEF - Utrecht Universi ty)\nSeparation of charges along the extreme magnetic field created in non -central relativistic heavy-ion collisions is predicted to be a signature of local parity violation in strong interactions. We report on results for charge dependent two particle azimuthal correlations with respect to the reaction plane for Pb-Pb collisions at $\\sqrt{s_{NN}} = 2.76$~TeV recorde d in 2010 with ALICE at the LHC. The results are compared with measurement s at RHIC energies and against currently available model predictions for L HC. Systematic studies of possible background effects including comparison with conventional (parity-even) correlations simulated with Monte-Carlo e vent generators of heavy-ion collisions will be also presented.\n\nhttp:// indico.cern.ch/contributionDisplay.py?contribId=540&sessionId=67&confId=30 248 LOCATION:Imperial Palace Salons Ravel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=540&sessionId=6 7&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Vector meson production in pp collisions at sqrt(s)=7 TeV\, measur ed with the ALICE detector DTSTART;VALUE=DATE-TIME:20110523T171000Z DTEND;VALUE=DATE-TIME:20110523T173000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-541@cern.ch DESCRIPTION:Speakers: DE FALCO\, Alessandro (Univ. + INFN Cagliari)\nLow m ass meson ($\\rho^0\, \\omega\, \\phi$) production provides key informatio n on the hot and dense state of strongly interacting matter produced in hi gh-energy heavy ion collisions. Among them\, strangeness enhancement can b e accessed through the measurement of $\\phi$ meson production\, while the measurement of the $\\rho$ spectral function can be used to reveal in-med ium modifications of hadron properties close to the QCD phase boundary. Ve ctor meson production in pp collisions provides a reference for these stud ies. Moreover\, it is interesting by itself\, since it can be used to tune particle production models at the unexplored LHC energy range.\n\nThe ALI CE experiment at the LHC can access vector mesons produced at forward rapi dity through their decays in muon pairs\, and at central rapidity in the d i-electron decay channel. We present transverse momentum spectra of $\\phi $ and $\\rho$+$\\omega$ mesons at forward rapidity in pp collisions at $\\ sqrt{s}=7$~TeV\, as well as the $\\phi$ absolute production cross section. We will also discuss the first signals and the analysis prospects for vec tor meson studies at forward rapidity in Pb-Pb collisions at $\\sqrt{s_{NN }}=2.76$~TeV.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=54 1&sessionId=99&confId=30248 LOCATION:Imperial Palace Salon Haendel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=541&sessionId=9 9&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Suppression of neutral pion production at large transverse momentu m measured with the ALICE experiment in PbPb collisions at $\\sqrt{s_{NN}} $=2.76 TeV DTSTART;VALUE=DATE-TIME:20110526T144000Z DTEND;VALUE=DATE-TIME:20110526T150000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-546@cern.ch DESCRIPTION:Speakers: Dr. CONESA BALBASTRE\, Gustavo (LPSC - Grenoble)\nTh e ALICE experiment at the LHC has measured the transverse momentum spectra of neutral mesons via the two photon decay in pp and Pb-Pb collisions at $\\sqrt{s_{NN}}$=2.76 TeV over a wide transverse momentum range with diffe rent subsystems: with the electromagnetic calorimeters PHOS and EMCAL and via conversions of the photons in the inner material of the experiment to e+e--pairs reconstructed with the Central Tracking System.\n\nIn this talk \, the production of neutral pions in pp and Pb-Pb collisions is compared in terms of the so called nuclear modification factor\, $R_{AA}$\, for dif ferent centrality selections of the Pb-Pb data sample.\n\nhttp://indico.ce rn.ch/contributionDisplay.py?contribId=546&sessionId=61&confId=30248 LOCATION:Centre Bonlieu Salle de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=546&sessionId=6 1&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Measurements of Bose-Einstein correlations at LHC with CMS DTSTART;VALUE=DATE-TIME:20110523T155000Z DTEND;VALUE=DATE-TIME:20110523T161000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-544@cern.ch DESCRIPTION:Speakers: PADULA\, Sandra (Instituto de Fisica Teorica (IFT)-U niversidade Estadual Paulista)\nBose--Einstein correlations between identi cal particles are measured in samples of proton-proton collisions at 0.9 a nd 7 TeV centre-of-mass energies\, recorded by the CMS experiment at the L HC. The signal is observed in the form of an enhancement of number of pair s of same-sign charged particles with small relative momentum. The depende nce of this enhancement on kinematic and topological features of the event is studied.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=544 &sessionId=50&confId=30248 LOCATION:Imperial Palace Rotonde de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=544&sessionId=5 0&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Charged particle production at large transverse momentum in PbPb c ollisions at sqrt(s)=2.76 TeV measured with ALICE at the LHC. DTSTART;VALUE=DATE-TIME:20110526T130000Z DTEND;VALUE=DATE-TIME:20110526T132000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-548@cern.ch DESCRIPTION:Speakers: OTWINOWSKI\, Jacek (Research Division and ExtreMe Ma tter Institute EMMI\, GSI Helmholtzzentrum für Schwerionenforschung\, Dar mstadt\, Germany)\nThe observed suppression of high-pT particle production in heavy-ion collisions is generally attributed to energy loss of partons as they propagate through the hot and dense QCD medium. Inclusive transv erse momentum spectra of primary charged particles in Pb-Pb collisions at sqrt(s)=2.76 TeV have been measured by the ALICE Collaboration at the LHC. The data are presented in intervals of collision centrality. The charged particle spectra are compared to those measured in pp collisions at the sa me collision energy\, scaled by the number of underlying nucleon-nucleon c ollisions. This comparison is expressed in terms of the nuclear modificati on factor R_AA. The results indicate only weak medium effects in periphera l collisions\, while there is clear evidence for strong medium effects in central collisions. In this talk we will present the results of an analysi s of the full Pb-Pb statistics obtained in the Nov. 2010 run. With these d ata the transverse momentum range covered is increased to 50 GeV/c as comp ared to previous studies of R_AA by ALICE. The evolution of R_AA with coll ision centrality and transverse momentum will be discussed.\n\nhttp://indi co.cern.ch/contributionDisplay.py?contribId=548&sessionId=61&confId=30248 LOCATION:Centre Bonlieu Salle de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=548&sessionId=6 1&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Direct photon production in heavy ion collisions in PHENIX experim ent at RHIC DTSTART;VALUE=DATE-TIME:20110526T144000Z DTEND;VALUE=DATE-TIME:20110526T150000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-410@cern.ch DESCRIPTION:Speakers: Dr. KISTENEV\, Edouard (Brookhaven National Laborato ry)\nE.Kistenev for the PHENIX Collaboration\n\nDirect photon production i n heavy ion collisions in PHENIX experiment at RHIC\n\nAmong the observab les used to probe the high temperature and high density phase of heavy nu cleus collisions direct photons are considered of particular interest. At LO direct photons are produced in quark-gluon Compton scattering and quar k-antiquark annihilation\, the NLO processes are dominating in bremsstrahl ung and fragmentation photon production and jet re-interaction in medium\ , QGP and hot hadronic stage emit thermal photons. Correlated measurement s of the transverse momentum dependence of direct photon production in co llisions of different species and of underlying event observables\, like isolation or flow\, as well as the nuclear modification factor may give insight into the relative contribution from various production mechanisms. \n\nExtracting the direct photon signal from the large hadron decay back ground is experimentally challenging particularly at lower transverse mome nta and high multiplicities. PHENIX used a combination of techniques bas ed upon virtual (via low to intermediate mass e+e- pairs) and real (neutra l clusters in calorimeters and reconstructed e+e- pairs from photon conver sions) photon measurements to determine direct photon yields in the range of transverse momenta up to about 20 GeV/c for a wide range of energies an d colliding species. \n\nIn this talk we present recent PHENIX results on total direct photon production in pp\, dA and AA collisions with emphasis on azimuthal correlations and nuclear modification. Implications of the PHENIX measurements for the initial temperature and density estimates as well as for the space-time evolution of the fireball will also be discuss ed.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=410&sessionI d=71&confId=30248 LOCATION:Imperial Palace Salon Ravel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=410&sessionId=7 1&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:QCD critical point and event-by-event fluctuations DTSTART;VALUE=DATE-TIME:20110527T161000Z DTEND;VALUE=DATE-TIME:20110527T163000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-412@cern.ch DESCRIPTION:Speakers: Prof. STEPHANOV\, Misha (UIC)\nObservables measuring the magnitude and non-Gaussianity of event-by-event fluctuations can be u sed to discover the QCD critical point in heavy-ion collisions. I shall de scribe theoretical predictions for the non-Gaussian measures such as skewn ess\, kurtosis and corresponding mixed moments as a function of the beam e nergy in the presence of the QCD critical point. I shall discuss implicati ons for the RHIC Beam Energy Scan and what we can learn from recent data.\ n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=412&sessionId=72 &confId=30248 LOCATION:Imperial Palace Salon Berlioz AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=412&sessionId=7 2&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Determining initial state fluctuations from flow measurements DTSTART;VALUE=DATE-TIME:20110523T142000Z DTEND;VALUE=DATE-TIME:20110523T144000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-318@cern.ch DESCRIPTION:Speakers: Dr. OLLITRAULT\, Jean-Yves (SPhT\, Saclay)\nLong-ran ge azimuthal correlations are generated by fluctuations of the\ninitial en ergy distribution\, followed by collective flow.\nWe list eight independen t observables which can be measured using\nmultiparticle azimuthal correla tions in the first three Fourier\nharmonics. Some of these observables are already well known\, such as\n$v_2\\{2\\}$ and $v_2\\{4\\}$\, but most of them are new\, in particular\,\nthe joint correlations between $v_1$\, $v _2$ and $v_3$.\nWe show that by taking ratios of these observables\, one c an construct\nquantities which are largely independent of the hydrodynamic response of the medium\, and thus are solely determined by initial fluctu ations.\nWe present predictions for these ratios using a Monte-Carlo\nGlau ber model and a Monte-Carlo KLN model\, and compare to existing\ndata from STAR and ALICE.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId =318&sessionId=46&confId=30248 LOCATION:Imperial Palace Rotonde de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=318&sessionId=4 6&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Turbulent fluctuations around Bjorken flow DTSTART;VALUE=DATE-TIME:20110527T161000Z DTEND;VALUE=DATE-TIME:20110527T163000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-313@cern.ch DESCRIPTION:Speakers: Dr. FLOERCHINGER\, Stefan (CERN)\nFor large Reynolds number (which is inverse to viscosity)\, fluids are known to develop turb ulence. Therefore\, the phenomenological evidence for a small viscosity su ggests that the hydrodynamical description of heavy ion collisions may hav e a turbulent regime. Assuming that averaged velocities are described by B jorkens model\, we investigate local fluctuations around it. These perturb ations are governed by non-linear equations and we characterize classes of qualitatively different evolution in terms of Reynolds numbers. Perturbat ions at different rapidities are found to decouple quickly\, and the local evolution becomes effectively two-dimensional. The resulting Navier-Stoke s equation of non-relativistic form (obtained after suitable coordinate tr ansformations) can be discussed within the theory of Kolmogorov and Kraich nan. In particular\, unlike three-dimensional turbulent flow\, two-dimensi onal viscous fluid dynamics can show the interesting phenomenon of inverse cascading of energy into large scale structures. We speculate on possible phenomenological implications of these findings.\n\nhttp://indico.cern.ch /contributionDisplay.py?contribId=313&sessionId=75&confId=30248 LOCATION:Imperial Palace Salon Ravel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=313&sessionId=7 5&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Sensitivity of the elliptic flow coefficient to a temperature-depe ndent shear viscosity-to-entropy density ratio in ultrarelativistic heavy- ion collisions at RHIC and LHC DTSTART;VALUE=DATE-TIME:20110523T171000Z DTEND;VALUE=DATE-TIME:20110523T173000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-310@cern.ch DESCRIPTION:Speakers: Dr. NIEMI\, Harri (Frankfurt Institute for Advanced Studies)\nWe investigate the effects of a temperature-dependent shear\nvis cosity-to-entropy density ratio $\\eta/s$ on the elliptic \nflow of hadron s in ultrarelativistic heavy-ion collisions [1]. \nWe use relativistic dis sipative fluid dynamics to model the \nspace-time evolution of the hot and dense system formed in \nsuch collisions. The final hadron spectra are ca lculated using \nthe Cooper-Frye freeze-out procedure.\n\nBy studying diff erent parametrizations for the temperature \ndependence of $\\eta/s$\, we found that the viscous suppression \nof the elliptic flow coefficient in $ \\sqrt{s_{NN}} = 200$ GeV \nAu+Au collisions at the Relativistic Heavy Ion Collider (RHIC) \nis dominated by the viscosity in the hadronic phase and in the \nphase transition region. However\, the elliptic flow at RHIC is \nlargely insensitive to the viscosity of the \nquark-gluon plasma (QGP).\ n\nOn the other hand\, we found that sensitivity of the elliptic \nflow to the high-temperature $\\eta/s$ increases with increasing \nmultiplicity a nd simultaneously the sensitivity to the hadronic \nviscosity decreases. A t the highest LHC energy\, the elliptic \nflow becomes sensitive to the QG P viscosity and insensitive to \nthe hadronic viscosity.\n\nThe change of the sensitivity from hadronic to QGP viscosity \nfrom RHIC to LHC can prov ide access to determining the \ntemperature dependence of $\\eta/s$ from e lliptic flow data.\n\n[1] H. Niemi\, G. S. Denicol\, P. Huovinen\, E. Moln ar\, D. H. Rischke\,\n[arXiv:1101.2442 [nucl-th]].\n\nhttp://indico.cern.c h/contributionDisplay.py?contribId=310&sessionId=49&confId=30248 LOCATION:Imperial Palace Salle de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=310&sessionId=4 9&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Medium-induced modifications of color flow in high transverse mome ntum processes DTSTART;VALUE=DATE-TIME:20110526T150000Z DTEND;VALUE=DATE-TIME:20110526T152000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-314@cern.ch DESCRIPTION:Speakers: Dr. BERAUDO\, Andrea (Centro Studi e ricerche "Enric o Fermi" - Rome (Italy))\nHeavy ion collisions at both RHIC and the LHC sh ow strong medium-induced modifications of high-pT single inclusive hadron spectra\, jet-like particle correlations and reconstructed jets.\nA dynami cal understanding of these jet quenching phenomena is typically sought wit hin a partonic picture in which the energy of highly energetic parent part ons is degraded due to\nmultiple inelastic and/or elastic interactions ins ide QCD matter.\nIn the current model implementations of this parton energ y loss the hadronization process is unaffected by it on account that for s ufficiently energetic projectiles time dilation should guarantee their had ronization outside the medium.\nHowever\, as it has been pointed out befor e\, the interaction of a colored parton with a QCD medium modifies the col or flow of the parton shower and arguably can imprint on the hadronization process at much higher transverse momentum than estimated previously. \nI n this context\, we present here the first QCD-based calculation of medium -induced color flow. \nDecomposing the multiple scattering diagrams of the BDMPS-Z formalism for parton energy loss into color-singlet 'prehadronic' systems\, we observe that (in comparison to vacuum fragmentation) medium- induced\neffects do not only degrade the longitudinal momentum of these co lor-singlet systems but also strongly enhance their invariant mass. The la rger the invariant mass of a color-singlet at the end of\nthe perturbative evolution\, the more likely it is for such system to decay into a larger number of hadronic fragments and thus leave a smaller fraction of the tota l available energy to the leading hadron.\nTherefore\, for multi-partonic states that show the same kinematic distributions at the end of the pertur bative evolution\, medium-modified color flow can be a significant additio nal source of\nmedium-induced multiplicity increase and medium-induced deg radation of the leading hadron.\nWe illustrate this general observation in simple models. We also identify a color flow specific formation time argu ment that indicates that effects of color-flow induced additional suppress ion\ncan persist over transverse energies up to tens of GeV\, and may cont ribute to an enhanced slope of the nuclear modification factor.\n\nhttp:// indico.cern.ch/contributionDisplay.py?contribId=314&sessionId=61&confId=30 248 LOCATION:Centre Bonlieu Salle de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=314&sessionId=6 1&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:J/Psi production and correlation in p+p and R_{AA} at high-pt in A u+Au collisions DTSTART;VALUE=DATE-TIME:20110524T134000Z DTEND;VALUE=DATE-TIME:20110524T140000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-366@cern.ch DESCRIPTION:Speakers: TANG\, Zebo (University of Science and Technology of China)\nThe $c\\bar{c}$ bound state $J/\\psi$ provides a unique tool to p robe the properties of the hot dense medium produced in heavy-ion collisio ns\, but to date its production mechanism is not understood clearly either in heavy-ion collisions or in hadron hadron collisions. Measurement of $J /\\psi$ production at high $p_T$ is particularly interesting since at high $p_T$ the various models give different predictions. Besides\, high $p_T$ particles are widely used to study the parton-medium interactions in heav y-ion collisions. The previous high-$p_T$ $J/\\psi$ measurements in $p+p$ and Cu+Cu collisions at RHIC published by the STAR collaboration found sev eral interesting things\, though constrained by limited statistics and sys tem size.\n\nIn this talk\, we will present the new measurement of $J/\\ps i \\rightarrow e^+e^-$ production at large $p_T$ range ($0\n\nhttp://indic o.cern.ch/contributionDisplay.py?contribId=366&sessionId=63&confId=30248 LOCATION:Imperial Palace Salon Ravel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=366&sessionId=6 3&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Heavy ion program at JINR NICA/MPD facility DTSTART;VALUE=DATE-TIME:20110526T134000Z DTEND;VALUE=DATE-TIME:20110526T140000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-365@cern.ch DESCRIPTION:Speakers: Prof. SORIN\, Alexander (Joint Institute for Nuclear Research)\nNew project NICA/MPD (Nuclotron-based Ion Collider fAcility/Mu ltiPurpose Detector) is now under realization phase at JINR (Dubna). The m ain goal of the project is to start in the coming years an experimental st udy of hot and dense strongly interacting matter and search for possible s igns of the mixed phase and critical endpoint in heavy ion collisions. Thi s study should be carried out at centre-of-mass ion collision energies of √sNN = 4-11 GeV (NN-equivalent) and at average luminosity of 10E27 cm-2 s-1 for Au (79+). The program also foresees start-up of fixed target expe riments with the extracted beams from upgraded JINR synchrotron Nuclotron at energies up to 5.81 GeV/u (scaled to A/Z = 2) and intensity up to 5*10E 8 s-1 (for Au 79+). Another goal of the project is aimed to study the spin structure of nucleon and the other spin sensitive phenomena with collidin g beams of polarized protons and deuterons. The SPD (Spin Physics Detector ) setup aimed at that purpose is under design.\n\nhttp://indico.cern.ch/co ntributionDisplay.py?contribId=365&sessionId=64&confId=30248 LOCATION:Imperial Palace Salon Haendel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=365&sessionId=6 4&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Can transport peak explain the low-mass enhancement of dileptons a t RHIC? DTSTART;VALUE=DATE-TIME:20110527T171000Z DTEND;VALUE=DATE-TIME:20110527T173000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-361@cern.ch DESCRIPTION:Speakers: Dr. AKAMATSU\, Yukinao (Nagoya University)\nWe propo se a novel relation between the low-mass enhancement of dielectrons observ ed at PHENIX and transport coefficients of QGP such as the charge diffusio n constant D and the relaxation time \\tau. The observed low-mass enhancem ent sets a lower-bound on the diffusion constant\, D > 2/T\, with T being temperature.\n\nTo reach this lower bound\, we start with the second-order relativistic\ndissipative hydrodynamics by Israel and Stewart. The linear ized hydrodynamic equation in external electromagnetic field gives a spect ral function which is parametrized by D and \\tau. Combining the spectral function with the full 3D hydrodynamic evolution\, theoretical dielectron spectra and the experimental data are compared.\n\nDetailed analysis shows that the low-mass dilepton enhancement originates mainly from the high-te mperature QGP phase where there is a large electric charge fluctuation as obtained from lattice QCD simulations.\n\nhttp://indico.cern.ch/contributi onDisplay.py?contribId=361&sessionId=76&confId=30248 LOCATION:Imperial Palace Salon Haendel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=361&sessionId=7 6&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Eccentricity and elliptic flow in proton-proton collisions from pa rton evolution DTSTART;VALUE=DATE-TIME:20110523T134000Z DTEND;VALUE=DATE-TIME:20110523T140000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-382@cern.ch DESCRIPTION:Speakers: Dr. HATTA\, Yoshitaka (University of Tsukuba)\nIt ha s been argued that high-multiplicity proton-proton collisions at the LHC m ay exhibit collective phenomena usually studied in the context of heavy-io n collisions\, such as elliptic flow. We study this issue using DIPSY\, a brand-new Monte Carlo event generator which features almost-NLL BFKL dynam ics and describes the transverse shape of the proton including all fluctua tions. We predict the eccentricity of the collision as a function of the m ultiplicity and estimate the magnitude of the elliptic flow. We then compa re the result with correlation from "nonflow" effects and suggest how to suppress the latter by applying cuts in the final state.\n\nhttp://indico. cern.ch/contributionDisplay.py?contribId=382&sessionId=46&confId=30248 LOCATION:Imperial Palace Rotonde de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=382&sessionId=4 6&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Quark recombination and heavy quark diffusion in hot nuclear matte r DTSTART;VALUE=DATE-TIME:20110523T161000Z DTEND;VALUE=DATE-TIME:20110523T163000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-385@cern.ch DESCRIPTION:Speakers: Prof. FRIES\, Rainer (Texas A&M University + RBRC)\n We review resonance recombination for quarks and show that it is compatibl e with quark and hadron distributions in local thermal equilbrium. We then calculate realistic heavy quark phase space distributions in heavy ion co llisions using Langevin simulations with non-perturbative interactions in hydrodynamic backgrounds. We hadronize the heavy quarks on the critical hy persurface given by hydrodynamics after constructing a criterion for the r elative recombination and fragmentation contributions. We discuss the infl uence of recombination and flow on the resulting heavy meson and single el ectron R_AA and elliptic flow. We will also comment on the effect of diffu sion of open heavy flavor mesons in the hadronic phase.\n\nhttp://indico.c ern.ch/contributionDisplay.py?contribId=385&sessionId=98&confId=30248 LOCATION:ImpErial Palace Salon Ravel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=385&sessionId=9 8&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Scale for the phase diagram of quantum chromodynamics DTSTART;VALUE=DATE-TIME:20110524T144000Z DTEND;VALUE=DATE-TIME:20110524T150000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-389@cern.ch DESCRIPTION:Speakers: Prof. GUPTA\, Sourendu (TIFR\, Mumbai)\nWe present a test of QCD in the non-perturbative domain through a comparison of thermo dynamic fluctuations predicted in lattice computations with the experiment al data of baryon distributions in high-energy heavy-ion collisions. This study provides evidence for thermalization in these collisions\, and allow us to set a scale for the QCD phase diagram. The scale is the temperature for the cross over from normal nuclear matter to the deconfined quark glu on plasma phase. Extension of these techniques might allow the identificat ion of the critical point of QCD.\n\nhttp://indico.cern.ch/contributionDis play.py?contribId=389&sessionId=54&confId=30248 LOCATION:Imperial Palace Salon Haendel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=389&sessionId=5 4&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Measurement of the electromagnetic dissociation cross-section of P b nuclei at 2.76 A Tev with the ALICE ZDC DTSTART;VALUE=DATE-TIME:20110527T171000Z DTEND;VALUE=DATE-TIME:20110527T173000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-578@cern.ch DESCRIPTION:Speakers: Dr. OPPEDISANO\, Chiara (INFN\, Sezione di Torino)\n Electromagnetic dissociation of heavy nuclei in ultra-peripheral interacti ons at high energies can be used to monitor the beam luminosity at collide rs. \nNeutrons emitted by the excited nuclei close to beam rapidity are de tected by the ALICE Zero Degree Calorimeters (ZDC) with full acceptance\, providing a precise measurement of the event rate.\n\nDuring the 2010 Pb-P b run\, a dedicated data taking has been performed\ntriggering on electrom agnetic processes with the ZDC. These data\, combined with the results fro m the Van der Meer scan\, allow one to measure the dissociation cross-sect ion of Pb nuclei at sqrt(s)=2.76 A TeV. \n\nExperimental results on the cr oss-section for electromagnetic dissociation processes of Pb nuclei at the LHC will be presented together with a comparison to the available predict ions.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=578&sessio nId=75&confId=30248 LOCATION:Imperial Palace Salon Ravel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=578&sessionId=7 5&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Identified particles from viscous hydrodynamics DTSTART;VALUE=DATE-TIME:20110527T165000Z DTEND;VALUE=DATE-TIME:20110527T171000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-573@cern.ch DESCRIPTION:Speakers: MOLNAR\, Denes (Purdue University)\nMuch of our unde rstanding of the collision dynamics at RHIC and LHC relies\non contrasting hydrodynamic or hydro+transport calculations with\nexperimental data. For example\, early evidence for rapid thermalization\nand quark-gluon plasma phase transition at RHIC came from particle spectra \nand the pion-p roton splitting of differential elliptic flow. An inevitable\ncomponent in these calculations is the conversion of the fluid to\nparticles. For an i deal fluid the conversion is straightforward (the usual\ncaveats of the Co oper-Frye treatment aside) because the phase space\ndistributions are loca lly thermal for each species. For a viscous fluid\,\nhowever\, an infinite class of phase space corrections can reproduce the \nsame hydrodynamic va riables\, even in a one-component system.\n\nPresent viscous hydrodynamic calculations routinely assume that phase\nspace corrections induced by she ar stress are quadratic in momentum and \nthat they have the same coeffi cient for all particle species ("democratic"\nGrad ansatz)\, independently of microscopic details. However\, in a gas of \nhadrons\, equilibration is driven by scattering rates - species that\nscatter rarely tend to be fu rther away from local equilibrium than those\nthat scatter often.\n\nWe wi ll present results from fully nonlinear covariant transport theory\nfor th e phase space corrections in an expanding multicomponent gas\, and\ntest t he validity of Grad's quadratic ansatz and of the "democratic" \nassumpt ion for sharing viscous effects between species. The findings will\nbe com pared to phase space corrections from linear response theory\, which\nis a pplicable for small gradients and small deviations from local\nequilibrium . Finally\, we will show how dynamical phase space corrections\naffect bas ic identified particle observables (spectra and elliptic flow)\nin the fra mework of viscous hydrodynamics.\n\nhttp://indico.cern.ch/contributionDisp lay.py?contribId=573&sessionId=75&confId=30248 LOCATION:Imperial Palace Salon Ravel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=573&sessionId=7 5&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Equilibration and Thermalization of Strongly Coupled Field Theorie s DTSTART;VALUE=DATE-TIME:20110523T132000Z DTEND;VALUE=DATE-TIME:20110523T134000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-68@cern.ch DESCRIPTION:Speakers: MUELLER\, Berndt (Duke University)\nUsing the AdS/CF T correspondence\, we probe the scale-dependence of thermalization in stro ngly coupled field theories following a quench\, via calculations of 2-poi nt functions\, Wilson loops and entanglement entropy in 2\, 3\, and 4 dime nsions. In the saddlepoint approximation these probes are computed in Ad S space in terms of invariant geometric objects -- geodesics\, minimal sur faces and minimal volumes. Our calculations for two dimensional field t heories are analytical. In our strongly coupled setting\, all probes in all dimensions share certain universal features in their thermalization: ( 1) a slight delay in the onset of thermalization\, (2) an apparent non-ana lyticity at the endpoint of thermalization\, (3) top-down thermalization w here the UV thermalizes first. For homogeneous initial conditions the en tanglement entropy thermalizes slowest\, and sets a time scale for equilib ration that saturates a causality bound over the range of scales studied. The growth rate of entanglement entropy density is nearly volume-independ ent for small volumes\, but slows for larger volumes.\n\nhttp://indico.cer n.ch/contributionDisplay.py?contribId=68&sessionId=4&confId=30248 LOCATION:Imperial Palace Salon Ravel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=68&sessionId=4& confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Event anisotropy $v_{2}$ of identified hadrons and light nuclei in Au+Au collisions at $\\sqrt{s_{NN}}=$ 7.7\, 11.5 and 39 GeV with STAR DTSTART;VALUE=DATE-TIME:20110523T165000Z DTEND;VALUE=DATE-TIME:20110523T171000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-253@cern.ch DESCRIPTION:Speakers: Dr. SCHMAH\, Alexander (Lawrence Berkeley National L ab)\nThe main goal of the RHIC Beam Energy Scan (BES) is the exploration\n of the QCD phase diagram in the region of a possible phase\ntransition bet ween the Quark Gluon Plasma (QGP) and the hadron gas\nphase. In the year 2 010 the first part of the BES program was\nsuccessfully accomplished by re cording data from Au+Au collisions \nat $\\sqrt{s_{NN}}=$ 7.7\, 11.5 and 3 9 GeV. The second harmonic \n($v_2$) of the azimuthal particle distributio n relative to the reaction plane\nwas found to be one of the most importan t observables to\nstudy the underlying dynamics in the early stage of the collisions.\nThe number-of-constituent quark (NCQ) scaling of $v_{2}$ is\n interpreted as a signature of deconfinement and existence of the QGP phas e. \nAt the lower energies studied it was expected to see a change in this \nscaling behaviour as the role of the QGP phase should diminish.\n\nWe p resent $v_{2}$ measurements at all three beam energies for\nidentified had rons ($\\pi$\, $K$\, K$_{s}^{0}$\, p\, $\\phi$\, $\\Lambda$\,\n$\\Xi$) and light nuclei (d and $^{3}He$) as a function of $p_{T}$ for \nvarious coll ision centralities. The measured nuclei $v_{2}$ are \ncompared to the prot on $v_{2}$ and results from a dynamical coalescence \nmodel calculation\, while the NCQ scaling is tested using all identified hadrons. \nFor the fi rst time\, a significant difference in $v_{2}$ between baryons and \nanti- baryons is observed. The difference increases \nwith decreasing center-of- mass energy.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=253 &sessionId=49&confId=30248 LOCATION:Imperial Palace Salle de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=253&sessionId=4 9&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Next-to-leading order analysis of inclusive jet\, tagged jet and d i-jet production in PbPb collisions at the LHC DTSTART;VALUE=DATE-TIME:20110524T140000Z DTEND;VALUE=DATE-TIME:20110524T142000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-250@cern.ch DESCRIPTION:Speakers: Dr. VITEV\, Ivan (Los Alamos National Laboratory)\nJ ets physics is an important new area of active research at RHIC and at the LHC that paves the way for novel tests of QCD multi-parton dynamics in he avy-ion reactions. At present\, perturbative QCD calculations of hard prob es in “elementary” nucleon-nucleon reactions can be consistently combi ned with the effects of the nuclear medium up to next-to-leading order. Wh ile such accuracy is desirable for leading particle tomography\, it is abs olutely essential for the new jet observables. With this motivation\, we p resent results and predictions at NLO for the recent LHC lead-lead (Pb+Pb) run at a center-of-mass energy of 2.76 TeV per nucleon-nucleon pair. Spec ifically\, we focus on the suppression the single and double inclusive je t cross sections and demonstrate how the di-jet asymmetry\, recently measu red by ATLAS and CMS\, can be related to these general results. The case o f jets tagged by an electroweak boson is exemplified by the Z0+jet channel . We predict a signature transition from enhancement to suppression of the tagged jet reflective of the medium-induced modification of parton showe rs. We also present NLO results relevant to the inclusive Z0 data obtained by the CMS collaboration. Our analysis includes not only final-state inel astic parton interactions in the QGP\, but also initial-state cold nuclear matter effects and non-perturbative hadronization corrections. Finally\, we clarify the relation between the suppression of inclusive jets\, tagged jets and di-jets and the quenching of inclusive particles on the example of the recent ALICE neutral pion attenuation data.  We conclude by discu ssing future directions and effective theories of QCD that can help impro ve the accuracy of the theoretical tools for jet tomography.  \n\nhttp:// indico.cern.ch/contributionDisplay.py?contribId=250&sessionId=51&confId=30 248 LOCATION:Imperial Palace Salle de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=250&sessionId=5 1&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Leading hadron PID effects in di-hadron angular correlations in ST AR DTSTART;VALUE=DATE-TIME:20110527T140000Z DTEND;VALUE=DATE-TIME:20110527T142000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-256@cern.ch DESCRIPTION:Speakers: KAUDER\, Kolja (University of Illinois at Chicago)\n Hard scatterings of partons provide a valuable colored probe of the\nstron gly-coupled medium created in ultra-relativistic heavy ion\ncollisions. Th ese hard scatterings can be studied by means of angular\ncorrelations of charged hadrons with respect to a high transverse\nmomentum trigger parti cle. Several recent two-particle correlation\nstudies indicate that A+A c ollision dynamics evolve significantly\nwith collision centrality. They sp ecifically reveal the presence of\nunexpected strong away-side deformation and the development of a\nlong-range "ridge" in correlation measured as a function of\n$\\Delta\\eta$ vs $\\Delta\\phi$. The detailed physics mec hanisms\nresponsible for these features however remain under active\ninves tigation.\n\nWe will present preliminary results of a new di-hadron correl ation\nanalysis\, measured as a function of $\\Delta \\phi$ vs $\\Delta \\ eta$\,\nfor identified high-pT triggers from the high-statistics 200 GeV A u+Au\ndata sample collected by the STAR experiment at RHIC during Run-10.\ nThe relativistic rise of the ionization energy loss dependence of\npartic les measured in the STAR TPC is used to obtain a statistical\nseparation of charged pions\, kaons\, and protons. The $\\Delta \\phi$ vs\n$\\Delta \ \eta$ correlations measured in this work extend earlier\nmeasurements of a zimuthal correlations (in $\\Delta \\phi$ only) with\nidentified hadron t riggers\, which\, admittedly with large\nuncertainties\, reported no sign ificant dependence on a leading hadron\nidentity. The added $\\Delta \\eta $ dimension and improved statistics\nreveal a rich set of new features: th e near-side ($ |\\Delta \\phi|\n\nhttp://indico.cern.ch/contributionDispla y.py?contribId=256&sessionId=66&confId=30248 LOCATION:Imperial Palace Salon Verdi AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=256&sessionId=6 6&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Charge fluctuations in chiral models and the QCD phase transition DTSTART;VALUE=DATE-TIME:20110524T140000Z DTEND;VALUE=DATE-TIME:20110524T142000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-257@cern.ch DESCRIPTION:Speakers: Dr. SKOKOV\, Vladimir (GSI\, Darmstadt\, Germany)\nF luctuations of conserved charges are key probes of the chiral\nphase trans ition in a QCD medium. Of particular phenomenological importance are studi es of such fluctuations at finite baryon density. A valuable tool for asse ssing critical fluctuations and the thermodynamics at non-vanishing baryon density is provided by effective chiral models.\n\nWe consider the Polyak ov loop-extended two flavors chiral quark--meson model (PQM) and discuss critical phenomena related with the spontaneous breaking of chiral symmetr y. The model is explored beyond the mean-field approximation in the functi onal renormalisation group (FRG) approach.\n\nWe formulate and solve the r enormalization group flow equation for the scale-dependent thermodynamic p otential in the presence of the gluonic background field at finite tempera ture and density [1] and determine the phase diagram of the PQM model in t he FRG approach [2]. We also consider properties of the net-quark number d ensity fluctuations as well as their higher cumulants [3] and discuss the influence of nonperturbative effects on their properties near the chiral c rossover transition. With increasing net-quark number density\, the higher order cumulants show a strong dependence on the chiral crossover transiti on. This is illustrated by exploring the ratios of moments of net-baryon n umber and electric charge fluctuations. We discuss their role as probes o f deconfinement and the chiral phase transition in heavy ion collisions at RHIC and LHC.\n\n\n[1] V. Skokov\, B. Stokic\, B. Friman\, K. Redlich\, P hys.Rev.C82:015206\,2010.\n[2] V. Skokov\, B. Friman\, K. Redlich\, arXiv: 1008.4570\n[3] B. Friman\, F. Karsch\, K. Redlich\, V. Skokov\, arXiv:1103 .3511\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=257&sessio nId=54&confId=30248 LOCATION:Imperial Palace Salon Haendel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=257&sessionId=5 4&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Measurements of low mass dielectrons in Au+Au collisions with the HBD upgrade of the PHENIX detector DTSTART;VALUE=DATE-TIME:20110526T140000Z DTEND;VALUE=DATE-TIME:20110526T142000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-508@cern.ch DESCRIPTION:Speakers: MAKEK\, Mihael (Weizmann Institute of Science)\nDile ptons are valuable probes in the investigation of the hot and\ndense matte r formed in heavy ion collisions\, since they interact only electromagneti cally and thus their path from the interaction region to the detectors is almost undisturbed. They can provide information about the matter properti es in the early stages of the collisions where deconfinement and chiral sy mmetry restoration are expected to take place. However\, the measurements of dileptons in heavy ion collisions are challenging due to the overwhelmi ng yield of pi0 Dalitz decays and photon conversions\, which produce a lar ge combinatorial background especially in the low invariant mass region (m _ee\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=508&sessionI d=71&confId=30248 LOCATION:Imperial Palace Salon Ravel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=508&sessionId=7 1&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Heavy-flavor production cross section in the semi-electronic chann el at mid-rapidity in pp collisions at sqrt(s)=7 TeV with ALICE DTSTART;VALUE=DATE-TIME:20110523T163000Z DTEND;VALUE=DATE-TIME:20110523T165000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-509@cern.ch DESCRIPTION:Speakers: Dr. MASCIOCCHI\, Silvia (GSI Darmstadt)\nHeavy quark s (charm and beauty) are among the most important probes that allow to tes t perturbative QCD descriptions of hard processes in hadronic interactions \, as well as to study the hot matter produced in high energy nucleus-nucl eus collisions. Precision measurements of heavy flavour production in prot on-proton collisions provide the necessary reference for the interpretati on of their behaviour in the deconfined state of strongly-interacting matt er (Quark-Gluon Plasma). Both collision systems can be extensively studie d with ALICE at LHC.\n\nThe production of heavy quarks can be measured via the detection of their semileptonic decays. We present the measurement of the inclusive electron spectrum at mid-rapidity\, in proton-proton colli sions and sqrt(s)=7 TeV\, based on the excellent particle identification c apabilities of ALICE.\n\nThe statistical subtraction of a cocktail that ac counts for photonic electrons and other background sources\, built on the base of ALICE measured meson spectra\, provides a measurement of the produ ction cross section of electrons from heavy-flavour hadron decays. The fur ther subtraction of the charm component\, obtained from the D meson cross section measured by ALICE in the same rapidity range\, as well as an analy sis of impact parameter distributions relative to the interaction vertex\, allow to determine the electron spectrum from pure beauty decays.\n\nThe results will be presented\, compared to theoretical predictions\, and disc ussed in the perspective of obtaining a reference for the studies of heavy quark energy loss in the Quark-Gluon Plasma.\n\nhttp://indico.cern.ch/con tributionDisplay.py?contribId=509&sessionId=98&confId=30248 LOCATION:ImpErial Palace Salon Ravel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=509&sessionId=9 8&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Photons at RHIC and at the LHC: the role of viscosity and of event -by-event fluctuations DTSTART;VALUE=DATE-TIME:20110526T150000Z DTEND;VALUE=DATE-TIME:20110526T152000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-506@cern.ch DESCRIPTION:Speakers: Prof. GALE\, Charles (McGill University)\nWe investi gate the yield and the azimuthal anisotropy of produced photons in heavy-i on collisions at RHIC and at LHC energies. We study the photons produced f rom a variety of sources\, including those from primordial nucleon-nucleon collisions\, from thermal partons\, from fragmenting QCD jets\, from jets interacting with thermal partons\, and from thermal hadrons. We study the interplay of those sources\, in an evolving 3D simulation of the collidin g system that involves hydrodynamics and hard jets. We study ideal and vis cous fluids\, and we evaluate the effect of fluctuating initial conditions \, and of using different hadronic equations of state. Under all of the ab ove conditions\, we quantify the ability of real photons to act as penetra ting probes of the hot and dense strongly interacting medium.\n\nhttp://in dico.cern.ch/contributionDisplay.py?contribId=506&sessionId=71&confId=3024 8 LOCATION:Imperial Palace Salon Ravel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=506&sessionId=7 1&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Anisotropic flow of charged particles at 2.76 TeV measured with th e ALICE detector DTSTART;VALUE=DATE-TIME:20110523T132000Z DTEND;VALUE=DATE-TIME:20110523T134000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-507@cern.ch DESCRIPTION:Speakers: BILANDZIC\, Ante (NIKHEF)\nAnte Bilandzic for the AL ICE collaboration\n\nMeasurements of anisotropic flow provided evidence fo r the creation of strongly interacting matter which appears to behave as a n almost ideal fluid. Anisotropic flow signals the presence of multiple in teractions and is very sensitive to the initial spatial anisotropy of the overlap region in non-central heavy-ion collisions. In this talk we report measurements of elliptic v2\, triangular v3\, quadrangular v4 and pentago nal v5 flow. These measurements have been performed with two- and multi-pa rticle correlation techniques. We will show how these measurements can be understood from the initial spatial anisotropy and its fluctuations. These observations provide a possible explanation for the away-side features of ten attributed to Mach cone effects.\n\nhttp://indico.cern.ch/contribution Display.py?contribId=507&sessionId=46&confId=30248 LOCATION:Imperial Palace Rotonde de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=507&sessionId=4 6&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Electrical conductivity and thermal dilepton rate from quenched la ttice QCD. DTSTART;VALUE=DATE-TIME:20110527T142000Z DTEND;VALUE=DATE-TIME:20110527T144000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-504@cern.ch DESCRIPTION:Speakers: Dr. KACZMAREK\, Olaf (University of Bielefeld)\nWe r eport on a continuum extrapolation of the vector current correlation funct ion for light valence quarks in the deconfined phase of quenched QCD. This is achieved by performing a systematic analysis of the influence of cut-o ff effects on light quark meson correlators at T=1.5 Tc using clover impro ved Wilson fermions [1]. In addition new results at 1.2 and 3.0 Tc will be presented.\nThe first two\, non-vanishing thermal moments of the vector m eson spectral function are determined and compared with those for free\, m assless quarks. \nWe discuss resulting constraints on the electrical condu ctivity and the thermal dilepton rate in a quark gluon plasma.\n\n[1] H.-T . Ding et al. Phys.Rev.D83(2011)034504\n\nhttp://indico.cern.ch/contributi onDisplay.py?contribId=504&sessionId=85&confId=30248 LOCATION:Imperial Palace Salon Berlioz AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=504&sessionId=8 5&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Measurement of $\\pi$/K/p spectra with ALICE in proton-proton coll isions at $\\sqrt{s} = 900$ GeV and $\\sqrt{s} = 7$ TeV DTSTART;VALUE=DATE-TIME:20110523T134000Z DTEND;VALUE=DATE-TIME:20110523T140000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-505@cern.ch DESCRIPTION:Speakers: CHOJNACKI\, Marek (UU/NIKHEF)\nThe ALICE experiment features several particle\n identification systems\, which allow us to mea sure spectra in a broad range of transverse momentum $p_{\\mathrm{t}}$ fro m 100 MeV/c up to a few GeV/c. \n New results on identified charged partic le $p_{\\mathrm{t}}$ spectra measured in proton-proton collisions at $\\sq rt{s}=7$ TeV will be presented.\n They will be compared to results obtaine d at 900 GeV and lower energies\, theoretical models and commonly used eve nt generators.\n The large statistics collected in collisions at $\\sqrt{s } = 7$TeV allows us to measure the spectra and yields as a function of the event multiplicity\, \nreaching a $dN/d\\eta$ comparable to nuclear colli sions at lower energy. The status and perspective of such measurement will also be presented.\n\nhttp://indico.cern.ch/contributionDisplay.py?contri bId=505&sessionId=6&confId=30248 LOCATION:Imperial Palace Salon Haendel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=505&sessionId=6 &confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Measurement of J/psi production at forward rapidity in pp collisio ns at sqrt(s)= 2.76 and 7 TeV with ALICE DTSTART;VALUE=DATE-TIME:20110524T132000Z DTEND;VALUE=DATE-TIME:20110524T134000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-503@cern.ch DESCRIPTION:Speakers: Dr. ARNALDI\, Roberta (INFN Torino)\nThe ALICE exper iment has studied J/psi production at forward rapidity from pT=0\, through its dimuon decay channel\, in proton-proton and Pb-Pb collisions at the L HC.\nResults obtained in proton-proton collisions at sqrt(s)=7 TeV will be discussed. The integrated and differential (in pT and rapidity) inclusive production cross sections will be presented and compared to results from other LHC experiments.\nFirst results on the J/psi integrated and differen tial cross sections in proton-proton collisions at sqrt(s)=2.76 TeV will a lso be discussed. These measurements\, at the same centre-of-mass energy a s for Pb-Pb collisions\, provide a crucial reference for the study of nucl ear matter effects on J/psi production.\n\nhttp://indico.cern.ch/contribut ionDisplay.py?contribId=503&sessionId=63&confId=30248 LOCATION:Imperial Palace Salon Ravel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=503&sessionId=6 3&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:The next decade of physics with PHENIX DTSTART;VALUE=DATE-TIME:20110526T142000Z DTEND;VALUE=DATE-TIME:20110526T144000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-500@cern.ch DESCRIPTION:Speakers: SICKLES\, Anne (Brookhaven)\nThe first decade of RHI C physics and the first heavy ion running at the LHC have produced a wealt h of data and discoveries. It is timely to now evaluate what has been lear ned and ask what compelling new questions have been raised. In this talk\, several key unanswered questions about the properties of the strongly cou pled quark gluon plasma and the distribution of partons inside nucleons an d nuclei will be discussed along with how they can be addressed experiment ally. The PHENIX Collaboration has developed a plan for upgrading the exp eriment in order to address these new questions. The current status of th ese plans will be presented.\n\nhttp://indico.cern.ch/contributionDisplay. py?contribId=500&sessionId=64&confId=30248 LOCATION:Imperial Palace Salon Haendel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=500&sessionId=6 4&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Elliptic flow at high transverse momentum in PbPb collisions at $\ \sqrt{s_{NN}} = 2.76$~TeV with the ALICE experiment DTSTART;VALUE=DATE-TIME:20110527T155000Z DTEND;VALUE=DATE-TIME:20110527T161000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-501@cern.ch DESCRIPTION:Speakers: DOBRIN\, Alexandru Florin (Wayne State University)\n As a consequence of the energy loss of highly energetic parton propagating through a dense medium\, jet quenching is an important probe of QGP creat ed in high energy heavy-ion collisions. Jet quenching leads to the suppres sion of particle production at high transverse momenta. An observable that can be used to better constrain the mechanism responsible for the parton energy loss is the elliptic azimuthal event anisotropy\, $v_2$\, which pro vides differential information on the particle yield and jet quenching rel ative to the reaction plane. \n\nWe report on measurements of the elliptic event anisotropy for unidentified charged particles with $p_T$ up to 20~G eV/c in Pb-Pb collisions at $\\sqrt{s_{NN}} = 2.76$~TeV recorded by the AL ICE experiment at the LHC. Additionally\, we report on measurement of $v_2 $ for identified particles with $p_T\n\nhttp://indico.cern.ch/contribution Display.py?contribId=501&sessionId=75&confId=30248 LOCATION:Imperial Palace Salon Ravel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=501&sessionId=7 5&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Particle identification in the ALICE experiment DTSTART;VALUE=DATE-TIME:20110523T132000Z DTEND;VALUE=DATE-TIME:20110523T134000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-469@cern.ch DESCRIPTION:Speakers: KALWEIT\, Alexander Philipp (Technische Universität Darmstadt)\nThe particle identification capabilities of the ALICE experim ent are unique among the four major LHC experiments. The working principle s\, the strategies for signal extraction\, and excellent performance of th e central barrel detectors in a high-multiplicity environment will be pres ented. The particle identification of the Inner Tracking System (ITS) and the Time Projection Chamber (TPC) are based on the specific energy loss wh ereas the Time-Of-Flight detector (TOF) determines the particle velocity b y measuring its flight time. Thus low momenta charged kaons\, pions\, prot ons\, deuterons\, tritons\, helium-nuclei\, and their respective anti-part icles can be identified from 100 MeV/c up to several GeV/c in momentum and the corresponding spectra and yields can be extracted. Weak decays of str ange particles can be identified via their particular kink and V0 topologi es and the precise determination of the first and secondary vertices. The pT-reach of hadron identification can be extended using Cherenkov-radiatio n in the High Momentum Particle Identification detector (HMPID) and by the relativistic rise in the ionization measurement of the TPC. Electron iden tification at higher momenta is achieved by the detection of transition ra diation in the Transition Radiation Detector (TRD).\n\nhttp://indico.cern. ch/contributionDisplay.py?contribId=469&sessionId=6&confId=30248 LOCATION:Imperial Palace Salon Haendel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=469&sessionId=6 &confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Femtoscopy of PbPb and pp collisions at the LHC with the ALICE exp eriment DTSTART;VALUE=DATE-TIME:20110524T071500Z DTEND;VALUE=DATE-TIME:20110524T073500Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-638@cern.ch DESCRIPTION:Speakers: KISIEL\, Adam (CERN)\nWe report on the results of fe mtoscopic analysis of Pb-Pb collisions at $\\sqrt{s_{NN}}=2.76$~TeV with i dentical pions and pp collisions at $\\sqrt{s}=0.9$\, $2.76$ and $7$~TeV w ith identical pions and kaons.\nDetailed femtoscopy studies in heavy-ion c ollisions at SPS and RHIC have shown that emission region sizes ("HBT radi i") decrease with increasing pair momentum\, which is understood as a man ifestation of the collective behavior of matter. The trend was predicted t o persist at the LHC. The data from Pb-Pb collisions confirm the existence of a flowing medium and provide strict constraints on the dynamical model s. Similar analysis is carried out for pp collisions for pions and kaons a nd qualitative similarities to heavy-ion data are seen\, especially in col lisions producing large number of particles. The observed trends give insi ght into the soft particle production mechanism in pp collisions.\n3D radi i were also found to universally scale with event multiplicity in heavy-io n collisions. We extend the range of multiplicities both upwards with the Pb-Pb data and downwards with the pp data to test the scaling in new areas . In particular the high multiplicity pp collisions reach particle densiti es comparable to the ones measured in peripheral Cu-Cu and Au-Au collision s at RHIC. This allows for the first time to directly compare freeze-out s izes for systems with very different initial states.\n\nhttp://indico.cern .ch/contributionDisplay.py?contribId=638&sessionId=8&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=638&sessionId=8 &confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Flow - Theory perspective DTSTART;VALUE=DATE-TIME:20110524T082000Z DTEND;VALUE=DATE-TIME:20110524T084500Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-639@cern.ch DESCRIPTION:Speakers: SCHENKE\, Björn (Brookhaven National Laboratory)\nh ttp://indico.cern.ch/contributionDisplay.py?contribId=639&sessionId=9&conf Id=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=639&sessionId=9 &confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Moments of charge fluctuations\, pseudo-critical temperatures and freeze-out in heavy ion collisions DTSTART;VALUE=DATE-TIME:20110524T130000Z DTEND;VALUE=DATE-TIME:20110524T132000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-161@cern.ch DESCRIPTION:Speakers: KARSCH\, Frithjof (Brookhaven National Laboratory)\n In the chiral limit and at temperatures close to the QCD phase transition temperature physical observables are expected to show universal properties that are controlled by the symmetry class of a 3-dimensional O(4) spin m odel [1]. Higher moments of net baryon number as well as electric charge f luctuations are sensitive to these universal features of the chiral phase transition [2]. \n\nThe sixth order moments are the first moments which wi ll diverge in the chiral limit at the QCD phase transition temperature. At non-zero values of the light quark masses the sixth order moment of baryo n number fluctuations has a pronounced minimum at a pseudo-critical tempe rature which is close to the temperature where fluctuations of the chiral order parameter are the largest.\n\nWe present a calculation of the O(4) s caling functions that control scaling properties of the net baryon number fluctuations [3]. Using these universal scaling functions as well as PNJL model calculations [4] we show that the sixth order moment of baryon numb er fluctuations is negative in the vicinity of the pseudo-critical tempera ture for the chiral transition and present new results from lattice calcul ations using the highly improved staggered fermion action (hisq). These QC D results are in striking contrast to hadron resonance gas model calculati ons. We conjecture that higher order moments of net baryon number and elec tric charge fluctuations are well suited to characterize freeze-out condit ions in heavy ion collisions. Their experimental analysis in low-energy ru ns at RHIC as well as at LHC will allow to verify to what extent freeze-ou t occurs from a thermal medium close to criticality.\n\n[1] O. Kaczmarek et al.\, Phase boundary for the chiral transition in (2+1) -flavor QCD at small values of the chemical potential Phys. Rev. D83\, 014504 (2011).\n[ 2] F. Karsch and K. Redlich\, Probing freeze-out conditions in heavy ion collisions with moments of charge fluctuations\, Phys. Lett. B695\, 136 (2 011).\n[3] J. Engels and F. Karsch\, The scaling functions of the free en ergy density and its derivatives for the 3d O(4) model\, in preparation.\n [4] J. Engels\, B. Friman\, F. Karsch\, K. Redlich and V. Skokov\, Fluctu ations as probe of the QCD phase transition and freeze-out in heavy ion c ollisions at LHC and RHIC\, arXiv:1103.3511.\n\nhttp://indico.cern.ch/cont ributionDisplay.py?contribId=161&sessionId=54&confId=30248 LOCATION:Imperial Palace Salon Haendel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=161&sessionId=5 4&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Pseudorapidity dependence of charged hadron multiplicity and trans verse energy densities in PbPb collisions from CMS DTSTART;VALUE=DATE-TIME:20110523T134000Z DTEND;VALUE=DATE-TIME:20110523T140000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-438@cern.ch DESCRIPTION:Speakers: KRAJCZAR\, Krisztian (KFKI Research Institute for Pa rticle and Nuclear Physics of the Hungarian Academy of Sciences)\nThe pseu dorapidity and centrality dependence of transverse energy and charged part icle multiplicities offers insight into the properties of the matter produ ced in the collisions of ultra-relativistic heavy nuclei. Multiplicities a s a function of center-of-mass energy and collision centrality are importa nt for exploring the role of hard and soft scattering in particle producti on and for looking at novel effects in nucleus-nucleus collisions (e.g. sc aling\, saturation).\n\nMeasurements of the charged hadron multiplicity an d transverse energy are presented for minimum bias PbPb collisions at a ce nter-of-mass energy of 2.76 TeV per nucleon pair. The number of charged ha drons was obtained by two different methods based on the inner silicon pix el system of the CMS detector at the LHC. One technique involved counting the number of reconstructed single particle hits in the pixel detector\, w hile the other formed hit pairs ('tracklets') from the different detector layers. The two methods are in excellent agreement. For the transverse ene rgy measurement\, CMS has almost hermetic calorimetry coverage with fine g ranularity and excellent resolution. In addition for particles near centra l rapidity momenta from the tracker can be combined with the calorimeter d ata to give a significant improvement of the system resolution. The measur ements is compared with heavy-ion results from earlier experiments\, where a smooth dependence on the collision energy is observed. The results as a function of centrality are compared to the corresponding value in pp coll isions interpolated from existing CMS measurements\n\nhttp://indico.cern.c h/contributionDisplay.py?contribId=438&sessionId=45&confId=30248 LOCATION:Imperial Palace Salle de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=438&sessionId=4 5&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Presentation of QM12 DTSTART;VALUE=DATE-TIME:20110528T093000Z DTEND;VALUE=DATE-TIME:20110528T095000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-646@cern.ch DESCRIPTION:Speakers: HARRIS\, John (Yale)\nhttp://indico.cern.ch/contribu tionDisplay.py?contribId=646&sessionId=88&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=646&sessionId=8 8&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Jet modification from RHIC to LHC DTSTART;VALUE=DATE-TIME:20110527T144000Z DTEND;VALUE=DATE-TIME:20110527T150000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-355@cern.ch DESCRIPTION:Speakers: Dr. MAJUMDER\, Abhijit (The Ohio State University)\n We calculate the modification of hard jets in dense extended matter in the \nhigher-twist formalism. The single gluon emission spectrum from a hard quark due to multiple scattering in a medium is evaluated as a power serie s in inverse powers of the virtuality of the hard jet. Retaining correctio ns up to next to leading power\, we calculate the medium modified fragment ation function by resumming the effect of multiple gluon emissions in a vi rtuality ordered DGLAP like evolution equation. This new formalism is appl ied to the computation of the $R_{AA}$ in high-energy heavy-ion collisions at RHIC and LHC. The medium is modeled using viscous 2+1D fluid dynamics which has been tuned to describe both the spectra and the $v_{2}$ at a $p_ T$ \n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=355&sessionI d=85&confId=30248 LOCATION:Imperial Palace Salon Berlioz AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=355&sessionId=8 5&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Heavy quarkonium measurements from PHENIX DTSTART;VALUE=DATE-TIME:20110524T140000Z DTEND;VALUE=DATE-TIME:20110524T142000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-354@cern.ch DESCRIPTION:Speakers: SEN\, Abhisek (Georgia State University)\nQuarkonia suppression is one of the highly cited\nsignature of quark gluon plasma (Q GP) formed in relativistic heavy\nion collisions. PHENIX observed a high s uppression of $J/\\Psi$\nproduction in Au+Au collisions at $\\sqrt{s}=200$ GeV. However\,\ntheoretical predictions remain diverse due to lack of pre cise\nknowledge of heavy flavor meson production\, suppression\,\nregenera tion in hot and dense medium and other cold nuclear\neffects. In order to separate these effects the PHENIX\ncollaboration also measured $J/\\Psi$ p roduction in d+Au collisions\nat $\\sqrt{s}=200$ GeV for isolating cold nu clear effects and Au+Au\ncollisions at low energies ($\\sqrt{s}=62$ GeV an d 39 GeV) to study\nthe onset of nuclear phase transition to QGP. The idea being that\nthe critical energy density for a crossover into the QGP phas e may\nnot be reached for certain combinations. The measurement of\n$J/\\P si$ nuclear modification factors at different center of mass\nenergies may elucidate this transition and supplement our\nunderstanding of the energy dependence of cold nuclear matter\neffects. \\\\\n In this talk\, we will show the latest results of $J/\\Psi$ and\nUpsilon measurements from p+p\, d+Au collisions at $\\sqrt{s}=200$\nGeV and several energy scans of Au+Au collisions.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=354 &sessionId=63&confId=30248 LOCATION:Imperial Palace Salon Ravel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=354&sessionId=6 3&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:AAMQS: a non-linear QCD description of new HERA data at small-x DTSTART;VALUE=DATE-TIME:20110526T144000Z DTEND;VALUE=DATE-TIME:20110526T150000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-353@cern.ch DESCRIPTION:Speakers: Dr. QUIROGA ARIAS\, Paloma (LPTHE \, UPMC Univ. Pari s 6)\nRecent developments in the computation of the NLO improvement for no n-linear QCD evolution equations has allowed\, for the first time\, for th e consistent description of experimental data using a first principle appr oach. In particular\, the Balitsky-Kovchegov equation including running co upling effects (rcBK) has been shown to provide an excellent global descri ption of inclusive DIS data.\nI will present a global analysis of availabl e data on inclusive structure functions measured in electron-proton scatte ring at small values of Bjorken-x\, including the latest data from the com bined HERA analysis on reduced cross sections. The resulting parametrizat ions allow for the reliable computation of physical observables in a kinem atical region (relevant for both p-p and A-A programmes at the LHC) where the standard DGLAP based techniques are expected to fail. Also\, the incl usion of the heavy quark contribution has resulted in a good description o f the experimental data for the charm component of the proton structure fu nction.\nFurther\, I will discuss the kinematical domain where significant deviations from NLO-DGLAP should be expected and a strategy to interface this approach\, reliant on k_t factorization\, with the commonly used coll inearly factorized parton distribution functions. Also preliminary extensi ons for nuclei will be discussed.\n\nhttp://indico.cern.ch/contributionDis play.py?contribId=353&sessionId=62&confId=30248 LOCATION:Imperial Palace Rotonde de l'Europe (150) URL:http://indico.cern.ch/contributionDisplay.py?contribId=353&sessionId=6 2&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Event-by-event hydrodynamics and elliptic flow from fluctuating in itial state DTSTART;VALUE=DATE-TIME:20110527T132000Z DTEND;VALUE=DATE-TIME:20110527T134000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-350@cern.ch DESCRIPTION:Speakers: HOLOPAINEN\, Hannu (University of Jyväskylä)\nWe d evelop a framework for event-by-event ideal hydrodynamics to study the dif ferential elliptic flow which is measured at different centralities in Au+ Au collisions at Relativistic Heavy Ion Collider (RHIC). Fluctuating initi al energy density profiles\, which here are the event-by-event analogues o f the eWN profiles\, are created using a Monte Carlo Glauber model. Using the same event plane method for obtaining $v_2$ as in the data analysis\, we can reproduce both the measured centrality dependence and the $p_T$ sha pe of charged-particle elliptic flow up to $p_T\\sim2$~GeV. We also consid er the relation of elliptic flow to the initial state eccentricity using d ifferent reference planes\, and discuss the correlation between the physic al event plane and the initial participant plane. Our results demonstrate that event-by-event hydrodynamics with initial state fluctuations must be accounted for before a meaningful lower limit for viscosity can be obtaine d from elliptic flow data.\n\nhttp://indico.cern.ch/contributionDisplay.py ?contribId=350&sessionId=67&confId=30248 LOCATION:Imperial Palace Salons Ravel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=350&sessionId=6 7&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Jet Quenching via Jet Collimation DTSTART;VALUE=DATE-TIME:20110524T134000Z DTEND;VALUE=DATE-TIME:20110524T140000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-359@cern.ch DESCRIPTION:Speakers: Dr. MILHANO\, José Guilherme (Instituto Superior Te cnico (IST) and CERN PH-TH)\nThe ATLAS and CMS Collaborations recently rep orted strong modifications of dijet properties in heavy ion collisions. In this work\, we discuss the extent to which these first data constrain the microscopic mechanism underlying jet quenching. Simple kinematic argument s lead us to identify a frequency collimation mechanism via which the medi um efficiently trims away the soft components of the jet parton shower. Th rough this mechanism\, the observed dijet asymmetry can be accomodated wit h values of $\\hat{q}\\\, L$ that lie in the expected order of magnitude.\ n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=359&sessionId=51 &confId=30248 LOCATION:Imperial Palace Salle de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=359&sessionId=5 1&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:eA collisions at the Large Hadron-electron Collider DTSTART;VALUE=DATE-TIME:20110526T132000Z DTEND;VALUE=DATE-TIME:20110526T134000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-215@cern.ch DESCRIPTION:Speakers: ARMESTO PEREZ\, Nestor (Universidade de Santiago de Compostela)\nI will show the possibilities for electron-ion studies offere d by the proposed electron-hadron collider at CERN\, the Large Hadron-elec tron Collider [1]. After a short introduction on open problems at small x\ , I will briefly present the machine and detector. Then I will focus on sm all-x aspects in electron-nucleus collisions\, first on inclusive measurem ents and the determination of nuclear parton densities\, and then on diffr action. I will finish by discussing some opportunities for final state stu dies.\n\n[1] M. Klein et al.\, Prospects for a Large Hadron Electron Colli der (LHeC) at the LHC\, EPAC'08\, 11th European Parti cle Accelerator Conf erence\, 23- 27 June 2008\, Genoa\, Italy\; http://cern.ch/lhec.\n\nhttp:/ /indico.cern.ch/contributionDisplay.py?contribId=215&sessionId=64&confId=3 0248 LOCATION:Imperial Palace Salon Haendel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=215&sessionId=6 4&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Physics opportunities of e-A colliders DTSTART;VALUE=DATE-TIME:20110528T083000Z DTEND;VALUE=DATE-TIME:20110528T090000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-212@cern.ch DESCRIPTION:Speakers: STASTO\, Anna (Penn State University)\nhttp://indico .cern.ch/contributionDisplay.py?contribId=212&sessionId=83&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=212&sessionId=8 3&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:The low energy frontier of A-A DTSTART;VALUE=DATE-TIME:20110528T073000Z DTEND;VALUE=DATE-TIME:20110528T080000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-210@cern.ch DESCRIPTION:Speakers: BLEICHER\, Marcus (Uni Frankfurt)\nhttp://indico.cer n.ch/contributionDisplay.py?contribId=210&sessionId=83&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=210&sessionId=8 3&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Physics opportunities of future p-A runs DTSTART;VALUE=DATE-TIME:20110528T080000Z DTEND;VALUE=DATE-TIME:20110528T083000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-211@cern.ch DESCRIPTION:Speakers: SALGADO LOPEZ\, Carlos Albert (Universidade de Santi ago de Compostela)\nhttp://indico.cern.ch/contributionDisplay.py?contribId =211&sessionId=83&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=211&sessionId=8 3&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:STAR measurements of bottom to charm ratio and heavy quark interac tion with the QCD medium through non-photonic electron-hadron correlations DTSTART;VALUE=DATE-TIME:20110523T153000Z DTEND;VALUE=DATE-TIME:20110523T155000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-280@cern.ch DESCRIPTION:Speakers: XU\, wenqin (University of California Los Angeles)\n FOR THE STAR COLLABORATION\nHeavy Quarks are mostly produced through gluon fusions during the initial stage of the heavy ion collisions. Experimenta lly heavy quarks are found to suffer a considerable energy loss in the QCD medium with the nuclear modification factor for non-photonic electrons (N PE) from heavy quark decays much smaller than unity in central Au+Au colli sions at RHIC. To better understand the heavy flavor production and energy loss mechanism it is crucial to determine experimentally the relative con tributions of Charm and Bottom meson decays to NPE and to study detailed c haracteristics of heavy quark interactions with the bulk QCD medium.\nWe w ill present the STAR measurements of relative charm and bottom contributio ns to NPE from p+p collisions at 200 and 500 GeV energies. We report the t otal bottom quark production cross section from p+p collisions at 200 GeV extracted from NPE spectrum and B to D ratios. We will also present the NP E-hadron correlations from Au+Au collisions at 200 GeV from the 2010 RHIC run where we have collected high statistics data set with low photonic con version background. The evolution of the NPE-hadron azimuthal angular corr elation as a function of collision centralities and in comparison with tha t from d+Au collisions will be indicative of dynamics of heavy quark inter actions with the QCD medium created in Au+Au collisions. Comparisons with theoretical calculations will also be discussed.\n\nhttp://indico.cern.ch/ contributionDisplay.py?contribId=280&sessionId=98&confId=30248 LOCATION:ImpErial Palace Salon Ravel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=280&sessionId=9 8&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Probing the gluonic structure of matter at a future Electron-Ion C ollider DTSTART;VALUE=DATE-TIME:20110526T130000Z DTEND;VALUE=DATE-TIME:20110526T132000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-282@cern.ch DESCRIPTION:Speakers: ULLRICH\, Thomas (Brookhaven National Laboratory)\nT he probing of nuclei and nucleons via deep-inelastic and diffractive proce sses in the high-energy (low-x) regime will open a new precision window fo r the investigation of the gluonic structure of matter.\n\nStudies of e+p collisions at HERA and especially d+Au collisions at RHIC have found tanta lizing hints of saturated gluon densities\, a phenomenon with substantial impact on the physics of heavy-ion collisions.  Unveiling the collective behavior of densely packed gluons under conditions where their self-intera ctions dominate will require an Electron-Ion Collider (EIC): a new facilit y with capabilities well beyond those of any existing accelerator. Such a collider could be sited either at BNL or JLAB. \n\nIn my talk I will outli ne the compelling physics case for e+A collisions with a focus on the oppo rtunities for small-x physics. I will discuss the related key measurements and give a brief status of machine concepts\, detector design\, and timel ine.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=282&session Id=64&confId=30248 LOCATION:Imperial Palace Salon Haendel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=282&sessionId=6 4&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Hydrokinetic predictions for femtoscopy scales in A+A collisions i n the light of recent ALICE LHC results DTSTART;VALUE=DATE-TIME:20110523T163000Z DTEND;VALUE=DATE-TIME:20110523T165000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-287@cern.ch DESCRIPTION:Speakers: Prof. SINYUKOV\, Yuriy (Bogolyubov Institute for The oretical Physics)\nA study of energy behavior of the pion spectra and inte rferometry radii is carried out for the SPS\, RHIC and LHC energies within the hydrokinetic approach. The main mechanisms that lead to the paradoxic al\, at first sight\, dependence of the femtoscopy scales on a collision e nergy\, in particular\, a decrease of Rout/Rside ratio with the energy gro wth\, are exposed. The hydrokinetic predictions for the HBT radii at the L HC energies are compared with the recent results of the ALICE experiment. The role of non-equilibrium stage of the matter evolution in the formation of femtoscopy scales at the LHC energies is analyzed.\nThe results are ba sed on:\n1. Iu.A. Karpenkov\, Yu.M. Sinyukov. Energy dependence of pion i nterferometry scales in ultra-relativistic heavy ion collisions. Phys. Le tt. B 688 50 (2010). \n2. Yu.M. Sinyukov\, Iu.A. Karpenkov. Hydrokinetic p redictions for femtoscopy scales in A+A collisions in the light of recent ALICE LHC results. arXiv:1103.5632v1 [nucl-th] 29 Mar 2011.\n3. Very new r esults based on the Hybrid Hydrokinetic Model (not published yet).\n\nhttp ://indico.cern.ch/contributionDisplay.py?contribId=287&sessionId=50&confId =30248 LOCATION:Imperial Palace Rotonde de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=287&sessionId=5 0&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Viscous hydrodynamic evolution with non-boost invariant flow for t he color glass condensate DTSTART;VALUE=DATE-TIME:20110527T144000Z DTEND;VALUE=DATE-TIME:20110527T150000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-286@cern.ch DESCRIPTION:Speakers: MONNAI\, Akihiko (The University of Tokyo)\nThe heav y ion program at LHC opened up a new era in the physics of the quark-gluon plasma (QGP) at higher energies. One of the most unique properties of the hot matter is the near-perfect fluidity\, which was first discovered in A u-Au collisions at RHIC [1]. Relativistic hydrodynamic analyses on the mom entum anisotropy of transverse collective flow revealed that small viscosi ty in the QGP is essential when the initial conditions are constructed fro m the color glass condensate (CGC)\, the description of saturated gluons i n the nuclei before collisions. On the other hand\, the dynamics of the lo ngitudinal flow has scarcely been discussed so far due to the numerical di fficulties of the non-boost invariant viscous hydrodynamic analyses in rel ativistic coordinates. Since the CGC itself is considered to be successful in reproducing the observed rapidity distributions and multiplicities at RHIC\, it would be indispensable to investigate the longitudinal hydrodyna mic evolution for the CGC. \n\nWe develop a viscous hydrodynamic model wit h both shear and bulk viscosity and solve the full second-order constituti ve equations [2] in the longitudinal direction with the relativistic coord inates using a novel numerical approach. The estimations are performed wit h the CGC-type initial distributions for both RHIC and LHC settings. The r esults exhibit visible and non-trivial deformations of the CGC rapidity di stributions during the hydrodynamic stage due to the interplay between two factors: (i) Entropy production from non-equilibrium processes and (ii) e ntropy flux to the forward rapidity caused by non-boost invariance [3]. We find difference in the hydrodynamic effects at RHIC and LHC\, which impli es that readjustment of the CGC parameters might be necessary. This would be one of the possible explanations for the fact that the CGC predictions tend to underestimate the multiplicity at mid-rapidity observed in the Pb- Pb collisions at LHC experiments [4]. The results indicate that non-boost invariant hydrodynamic evolution together with viscosity is indispensable for understanding the physics of relativistic heavy ion collisions as a wh ole. We also obtain several important numerical insights towards a full (3 +1)-dimensional viscous hydrodynamic model for the more quantitative analy ses.\n\nReferences:\n[1] http://www.bnl.gov/bnlweb/pubaf/pr/PR_display.asp ?prID=05-38\n[2] A. Monnai and T. Hirano\, Nucl. Phys A 847\, 283 (2010)\n [3] A. Monnai and T. Hirano\, arXiv:1102.5053 [nucl-th]\n[4] K. Aamodt et al. [The ALICE Collaboration]\, Phys. Rev. Lett. 105\, 252301 (2010)\n\nht tp://indico.cern.ch/contributionDisplay.py?contribId=286&sessionId=67&conf Id=30248 LOCATION:Imperial Palace Salons Ravel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=286&sessionId=6 7&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Production of (anti)nuclei in pp and PbPb collisions with ALICE at the LHC DTSTART;VALUE=DATE-TIME:20110527T101000Z DTEND;VALUE=DATE-TIME:20110527T102000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-670@cern.ch DESCRIPTION:Speakers: SHARMA\, Natasha (Department of Physics-Panjab Unive rsity)\nhttp://indico.cern.ch/contributionDisplay.py?contribId=670&session Id=82&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=670&sessionId=8 2&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Continuous Time Monte Carlo for QCD in the Strong Coupling Limit DTSTART;VALUE=DATE-TIME:20110527T102000Z DTEND;VALUE=DATE-TIME:20110527T103000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-671@cern.ch DESCRIPTION:Speakers: UNGER\, Wolfgang (ETH Zuerich)\nhttp://indico.cern.c h/contributionDisplay.py?contribId=671&sessionId=82&confId=30248 LOCATION:Centre Bonlieu Théâtre National URL:http://indico.cern.ch/contributionDisplay.py?contribId=671&sessionId=8 2&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:STAR science for the coming decade DTSTART;VALUE=DATE-TIME:20110526T144000Z DTEND;VALUE=DATE-TIME:20110526T150000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-263@cern.ch DESCRIPTION:Speakers: Prof. GAGLIARDI\, Carl (STAR Collaboration)\nThe STA R Collaboration has identified eight key questions that will drive RHIC sc ience during the coming decade\, six of which involve ultrarelativistic he avy-ion collisions. What is the nature of the initial state in nuclear co llisions? What are the properties of the strongly-coupled system produced at RHIC\, and how does it thermalize? Are the interactions of energetic partons with QCD matter characterized by weak or strong coupling\, and wha t is the detailed mechanism for partonic energy loss? Where is the QCD cr itical point and the associated first-order phase transition line? Can we strengthen current evidence for novel symmetries in QCD matter and open n ew avenues? What exotic particles are created at RHIC? The STAR detector \, with its large acceptance tracking\, calorimetry\, and particle identif ication\, is an ideal tool to explore these questions. Complete answers n onetheless will require detector upgrades. Near-term upgrades\, including the Heavy Flavor Tracker and Muon Telescope Detector\, will enable a rich program of heavy flavor physics. Upgrades to the forward region will ena ble detailed studies of the partonic structure of nuclei and the onset of gluon saturation. An additional suite of upgrades during the latter part of the decade will position STAR to make crucial measurements in e+p and e +A collisions during the early phase of eRHIC. The talk will provide an o verview of this STAR decadal plan.\n\nhttp://indico.cern.ch/contributionDi splay.py?contribId=263&sessionId=64&confId=30248 LOCATION:Imperial Palace Salon Haendel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=263&sessionId=6 4&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Heavy-flavor dynamics in nucleus-nucleus collisions: from RHIC to LHC DTSTART;VALUE=DATE-TIME:20110527T144000Z DTEND;VALUE=DATE-TIME:20110527T150000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-267@cern.ch DESCRIPTION:Speakers: Dr. MONTENO\, Marco (INFN Torino)\nThe understanding of the heavy-quark dynamics in nucleus-nucleus collisions\, so far possib le at RHIC only through the inclusive measurement of electron spectra from c and b decays\, is becoming now accessible at LHC also through the exclu sive reconstruction of open-charm hadrons\, thus providing a richer physic al information useful to discriminate among different theoretical models.\ nA complete setup to study heavy-flavor observables in pp and AA collision s was recently developed by us: in the latter case the presence of a hot f ireball leads to a modification of the final p_T-spectra. More specificall y\, the propagation of c and b quarks in the plasma (whose evolution is su pposed to be described by relativistic hydrodynamics) is followed by solvi ng the relativistic Langevin equation within a picture of multiple uncorre lated random collisions. The relevant heavy-quark transport coefficients a re given a microscopic evaluation within the Hard Thermal Loop approximati on\, supplemented by a kinetic pQCD calculation for hard collisions.\nThe results obtained with this approach turned out to be in reasonable \nagree ment with the experimental data obtained at RHIC\, in particular \nfor the R_AA of non-photonic electrons.\nHere we extend the above study to the LH C case\, at the current center-of-mass energy of 2.76 TeV. The first data on primary charged particle density obtained by the ALICE collaboration (d N_ch/deta~1600 in central PbPb collisions) allow to provide an estimate of the initial conditions of the hydrodynamical evolution of the background medium. First results for the spectra\, the R_AA and v_2 of open-charm had rons and non-photonic single-electrons will be presented.\n\nhttp://indico .cern.ch/contributionDisplay.py?contribId=267&sessionId=53&confId=30248 LOCATION:Imperial Palace Rotonde de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=267&sessionId=5 3&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Jets in QCD media: from color coherence to decoherence DTSTART;VALUE=DATE-TIME:20110523T140000Z DTEND;VALUE=DATE-TIME:20110523T142000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-266@cern.ch DESCRIPTION:Speakers: Dr. MEHTAR-TANI\, Yacine (University of Santiago de Compostela)\nJet physics in hadronic collisions is one of the major achiev ements of perturbative QCD. However\, a complete theory of jets in a hot a nd dense partonic environment remains to be developed. Such a theory is ne eded in Heavy-Ion Collisions (HIC)\, at RHIC and now at the LHC\, in order to have a clean access to the properties of the Quark-Gluon Plasma (QGP). \n\nTo this end\, we have investigated medium modification of the radiati on pattern of a quark-antiquark antenna traversing a dense medium in order to understand how the QGP alters color coherence which is an important fe ature of the intRAjet structure in vacuum. In contrast to gluon radiation in vacuum\, and unexpectedly\, we find a strict geometrical separation bet ween in-vacuum and medium-induced gluon radiation. Also\, a soft logarithm ic divergence appears pointing to the possibility of resuming multiple glu on branching in the cascade. Moreover\, in the case of an opaque medium ne ar the unitarity bound\, a simple and intuitive physical picture arises : the interaction with the QGP leads to the gradual decoherence of the pair yielding a universal radiation pattern which does not depend on the initia l color configuration of the antenna. \nThese results are in qualitative a greement with the recent ATLAS and CMS data and provide a starting point for further studies on in-medium jet modification.\n\nhttp://indico.cern. ch/contributionDisplay.py?contribId=266&sessionId=4&confId=30248 LOCATION:Imperial Palace Salon Ravel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=266&sessionId=4 &confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Jet shower evolution in medium and di-jet asymmetry in PbPb collis ions at the LHC DTSTART;VALUE=DATE-TIME:20110527T155000Z DTEND;VALUE=DATE-TIME:20110527T161000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-59@cern.ch DESCRIPTION:Speakers: QIN\, Guang-You (Duke University)\nWe study the evol ution of a partonic jet shower propagating through a hot quark-gluon plasm a. A differential equation is derived the evolution of the radiated gluon distribution as the jet propagates through the medium. Combined with the i n-medium evolution of the leading parton\, we compute the depletion of the energy from the jet cone by dissipation through elastic collisions with m edium constituents\, by scattering of shower partons to larger angles\, an d by radiation outside the jet cone. Numerical results are presented for t he nuclear modification of di-jet energy asymmetry in Pb+Pb collisions at the LHC.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=59&sess ionId=74&confId=30248 LOCATION:Imperial Palace Salon Verdi AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=59&sessionId=74 &confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:The QGP shear viscosity: elusive goal or just around the corner? DTSTART;VALUE=DATE-TIME:20110523T153000Z DTEND;VALUE=DATE-TIME:20110523T155000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-57@cern.ch DESCRIPTION:Speakers: HEINZ\, Ulrich (The Ohio State University)\, SHEN\, Chun (Ohio State University)\nThe last two years have seen tremendous prog ress in the theoretical tools for extracting the specific shear viscosity of the quark-gluon plasma in the temperature range explored by heavy-ion c ollisions at RHIC and LHC. The effects of viscosity on the transverse mome ntum spectra and differential elliptic flow and their interplay with other hydrodynamic parameters have been studied systematically [1]. A global vi scous hydrodynamic fit to charged and identified hadron spectra and ellipt ic flow at all collision centralities in RHIC Au+Au collisions has been sh own to successfully extrapolate to Pb+Pb collisions at the LHC [2]\, provi ding a rather good first description of the elliptic flow measured by the ALICE collaboration. Viscous relativistic hydrodynamics has been coupled t o a microscopic description of the late hadronic rescattering and freeze-o ut stage [3\,4]\, thus eliminating previous large uncertainties arising fr om strong dissipative effects in the hadronic phase [5] and allowing for a first tightly constrained extraction of the QGP shear viscosity from RHIC data [3\,6]. The largest remaining uncertainty arises from poor theoretic al control over the initial spatial eccentricity of the collision fireball \, and a lack of prospects to more tightly constrain this initial deformat ion theoretically appears to make progress towards further increased empir ical precision for the QGP shear viscosity elusive. Recent studies of high er harmonic eccentricity and flow coefficients [7] and their fluctuations from collision to collision using event-by-event hydrodynamics provide\, h owever\, a novel angle that may allow to settle this question experimental ly. This will be the main focus of my talk. \n[1] Chun Shen\, U. Heinz\, P . Huovinen\, H. Song\, Phys. Rev. C82\, 054904 (2010). \n[2] Chun Shen\, U . Heinz\, et al.\, "Radial and elliptic flow in Pb+Pb collisions at the La rge Hadron Collider from viscous hydrodynamics\,'' to be published. \n[3] H. Song\, S. A. Bass\, U. Heinz\, T. Hirano and Chun Shen\, arXiv:1011.278 3.\n[4] H. Song\, S. Bass and U. Heinz\, Phys. Rev. C\, in press [arXiv:10 12.0555].\n[5] Chun Shen and U. Heinz\, arXiv:1101.3703\n[6] H. Song\, S. Bass\, U. Heinz\, T. Hirano and Chun Shen\, arXiv:1101.4638 [nucl-th].\n[7 ] Zhi Qiu and U. Heinz\, "Event-by-event shape and flow fluctuations in RH IC fireballs\,'' to be published.\n\nhttp://indico.cern.ch/contributionDis play.py?contribId=57&sessionId=49&confId=30248 LOCATION:Imperial Palace Salle de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=57&sessionId=49 &confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Massive QCD antenna radiation in medium DTSTART;VALUE=DATE-TIME:20110527T132000Z DTEND;VALUE=DATE-TIME:20110527T134000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-56@cern.ch DESCRIPTION:Speakers: Mr. MA\, Hao (Universidad de Santiago de Compostela) \nMedium modifications of jets have previously been thoroughly studied by calculating the gluon radiation spectrum off a highly energetic quark trav ersing a hot and dense QCD medium. But the study of the interference effec ts\, the building block of the QCD jet calculation in vacuum\, between dif ferent radiators has been missing for quite a long time. In this work we c alculate\, in the eikonal approximation\, the gluon radiation spectrum off a quark-antiquark antenna passing through a deconfined QCD plasma with th e masses of the quark and antiquark turned on. The massive quark-antiquark antenna involves both the dead cone effect and the Landau-Pomeranchuk-Mig dal (LPM) effect\, and takes into account the correlation between both of the emitters leading to an additional strong suppression of gluon radiatio n at angles smaller than the opening angle of the quark-antiquark pair. Fu rthermore\, the quark-antiquark antenna spectrum is infrared divergent. We calculate the medium-induced energy loss of heavy quarks (charm and botto m) and compare it to well-known results (BDMPS/GLV). The implications on j et quenching observables in heavy ion collisions are also discussed.\n\nht tp://indico.cern.ch/contributionDisplay.py?contribId=56&sessionId=53&confI d=30248 LOCATION:Imperial Palace Rotonde de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=56&sessionId=53 &confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Low mass dimuon production in proton-nucleus collisions at $\\sqrt {s} = 27.5$~GeV with the NA60 experiment DTSTART;VALUE=DATE-TIME:20110527T155000Z DTEND;VALUE=DATE-TIME:20110527T161000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-536@cern.ch DESCRIPTION:Speakers: Dr. URAS\, Antonio (INFN Cagliari\, IPNL Lyon)\nThe study of the production of low mass vector and pseudoscalar mesons in prot on-nucleus collisions represents a natural baseline for the heavy-ion obse rvations\, allowing to provide a reference in an environment of cold nucle ar matter. In-medium modifications of the vector meson spectral functions were actually predicted to occur also in cold nuclear matter\, though the experimental evidence at the moment is controversial. Proton-nucleus colli sions also give access to the study of strangeness production as a functio n of the size of the nucleus\, providing a robust ground for strangeness e nhancement in nuclear collisions. Besides that\, the study of the nuclear dependence of particle properties in proton-nucleus collisions\, as the tr ansverse momentum spectra and the production cross sections\, is an effect ive tool to understand the dynamics of soft hadron interactions.\n\nThe NA 60 experiment has collected an unprecedented statistics of 180000 low mass muon pairs in proton-nucleus data at $\\sqrt{s} = 27.5$~GeV exposing to t he beam six target materials: Be\, Cu\, In\, W\, Pb and~U. The very good s tatistical accuracy and dimuon mass resolution allowed us to perform a pre cision measurement of the $\\rho$ line shape related the $T$ parameter of the Boltzmann factor\, which was measured for the first time in p-A collis ions. The $\\rho-\\omega$ interference was also investigated and prelimina ry results are reported. No evidence of in-medium effects is found. In add ition\, the electromagnetic transition form factors of the $\\eta$ and $\\ omega$ mesons were also measured\, with a significant precision improvemen t with respect to the previous measurements. The $\\omega$ results\, compa red to the latest theoretical developments\, still show the presence of an anomaly which is not described by theory. For the $\\omega$ and $\\phi$ m esons\, thanks to the good acceptance coverage\, the transverse momentum s pectra were measured down to zero $\\pt$. Finally\, the nuclear dependence of the production cross sections was investigated in terms of the power l aw $\\sigma_\\mathrm{pA} \\propto \\mathrm{A}^\\alpha$\, and the $\\alpha $ parameter was studied as a function of $\\pt$.\n\nhttp://indico.cern.ch/ contributionDisplay.py?contribId=536&sessionId=76&confId=30248 LOCATION:Imperial Palace Salon Haendel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=536&sessionId=7 6&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:J/psi production at forward rapidity in PbPb collisions at sqrt(s_ NN) = 2.76 TeV\, measured with the ALICE detector DTSTART;VALUE=DATE-TIME:20110524T150000Z DTEND;VALUE=DATE-TIME:20110524T152000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-535@cern.ch DESCRIPTION:Speakers: Dr. PILLOT\, Philippe (SUBATECH\, Nantes)\nHeavy qua rkonium states are expected to provide essential information on the proper ties of the high-density strongly-interacting system formed in the early s tages of high-energy heavy-ion collisions. Such probes are especially prom ising at LHC energies\, where heavy quarks are copiously produced.\n\nALIC E is the experiment at the LHC mainly dedicated to the study of nucleus-nu cleus collisions. At forward rapidity (2.5 \n\nhttp://indico.cern.ch/contr ibutionDisplay.py?contribId=535&sessionId=63&confId=30248 LOCATION:Imperial Palace Salon Ravel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=535&sessionId=6 3&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Net-baryon-\, net-proton-\, and net-charged particle kurtosis in h eavy-ion collisions within a relativistic transport approach DTSTART;VALUE=DATE-TIME:20110527T171000Z DTEND;VALUE=DATE-TIME:20110527T173000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-532@cern.ch DESCRIPTION:Speakers: NAHRGANG\, Marlene (Goethe University Frankfurt and Frankfurt Institute for Advanced Studies (FIAS))\nWe explore the potential of net-baryon\, net-proton and net-charge\nkurtosis measurements to inves tigate the properties of hot and dense\nmatter created in relativistic hea vy-ion collisions. Contrary to\ncalculations in a grand canonical ensemble we explicitly take into\naccount exact electric and baryon charge conserv ation on an\nevent-by-event basis. This drastically limits the width of ba ryon\nfluctuations.\nA simple model to account for this is to assume Poiss on distributions with a sharp cut-off at the tails.\nWe present baseline p redictions of the energy dependence of the\nnet-baryon\, net-proton and ne t-charge kurtosis for central ($b\\leq\n2.75$~fm) Pb+Pb/Au+Au collisions f rom $E_{lab}=2A$~GeV to\n$\\sqrt{s_{NN}}=200$~GeV from the UrQMD model. Wh ile the net-charge\nkurtosis is compatible with values around zero\, the n et-baryon number decreases to large negative values with decreasing beam e nergy. The net-proton kurtosis becomes only slightly negative for low $\\s qrt{s_{NN}}$.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=53 2&sessionId=72&confId=30248 LOCATION:Imperial Palace Salon Berlioz AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=532&sessionId=7 2&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Production of neutral pions and eta-mesons in pp collisions measur ed with ALICE DTSTART;VALUE=DATE-TIME:20110523T142000Z DTEND;VALUE=DATE-TIME:20110523T144000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-538@cern.ch DESCRIPTION:Speakers: Dr. REYGERS\, Klaus (University of Heidelberg)\nThe inclusive production of $\\pi^0$ and $\\eta$ mesons is measured at mid-rap idity in pp collisions over a wide transverse momentum ($p_T$) range with the ALICE experiment at $\\sqrt{s}$=900GeV\, 2.76~TeV and 7~TeV. The meson s are measured via two different techniques: with the calorimeters (PHOS a nd EMCAL) and via photon conversions reconstructed in the Central Tracking System.\n\nA systematic comparison to next-to-leading order pQCD (NLO) ca lculations for $\\pi^0$ and $\\eta$ mesons as well as the $\\sqrt{s}$-depe ndence of the $\\pi^0$ production is presented. Furthermore\, the $\\eta$ to $\\pi^0$ ratio as well as the corresponding NLO calculations are discus sed.\n\nThe presented data serves as a baseline both for the decay photon background for direct photon measurements as well as for the background of electrons in open heavy flavor measurements. It will then be used to calc ulate the nuclear modification factor\, R$_{AA}$\, in heavy-ion collision s with ALICE.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=53 8&sessionId=6&confId=30248 LOCATION:Imperial Palace Salon Haendel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=538&sessionId=6 &confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Heavy-quarks and quarkonia DTSTART;VALUE=DATE-TIME:20110522T124500Z DTEND;VALUE=DATE-TIME:20110522T130000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-111@cern.ch DESCRIPTION:Speakers: MOCSY\, Agnes (Pratt Institute\, NY\, USA)\nhttp://i ndico.cern.ch/contributionDisplay.py?contribId=111&sessionId=91&confId=302 48 LOCATION:Imperial Palace Salle de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=111&sessionId=9 1&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Jets\, high-pT hadrons\, and prompt photons DTSTART;VALUE=DATE-TIME:20110522T123000Z DTEND;VALUE=DATE-TIME:20110522T124500Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-110@cern.ch DESCRIPTION:Speakers: TYWONIUK\, Konrad (University of Lund)\nhttp://indic o.cern.ch/contributionDisplay.py?contribId=110&sessionId=91&confId=30248 LOCATION:Imperial Palace Salle de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=110&sessionId=9 1&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Fluctuation\, dissipation\, and thermalization in non-equilibrium ${\\rm AdS}_5$ black hole geometries DTSTART;VALUE=DATE-TIME:20110527T140000Z DTEND;VALUE=DATE-TIME:20110527T142000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-420@cern.ch DESCRIPTION:Speakers: TEANEY\, Derek (Stony Brook University)\nWe give a s imple recipe for computing dissipation\nand fluctuations (commutator and a nti-commutator correlation functions) for non-equilibrium black hole geo metries. The recipe\nformulates Hawking radiation as an initial value prob lem\,\nand is suitable for numerical work. We show how to package the flu ctuation and\ndissipation near the event horizon into correlators on the s tretched horizon.\nThese horizon correlators determine the bulk and bound ary field theory\ncorrelation functions.\nIn addition\, the horizon corre lators are the components of a horizon\neffective action which provides a quantum generalization of the membrane\nparadigm. In equilibrium\, the a nalysis reproduces previous results on the\nBrownian motion of a heavy qua rk. Out of equilibrium\, Wigner transforms of\ncommutator and anti-commu tator correlation functions obey a\nfluctuation-dissipation relation at hi gh frequency.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=42 0&sessionId=85&confId=30248 LOCATION:Imperial Palace Salon Berlioz AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=420&sessionId=8 5&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:New results on event-by-event ratio fluctuations in PbPb collision s at CERN SPS energies DTSTART;VALUE=DATE-TIME:20110524T144000Z DTEND;VALUE=DATE-TIME:20110524T150000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-427@cern.ch DESCRIPTION:Speakers: SCHUSTER\, Tim (Frankfurt Institute for Advanced Stu dies\, Goethe-University Frankfurt)\nEvent-by-event fluctuations of hadron ratios characterize the hadro-chemical composition of the hot and dense m edium created in heavy-ion collisions. This makes the fluctuation signal s ensitive to changes in the underlying structure of matter\, and phase tran sition effects in particular. In the SPS energy range\, inclusive hadronic observables indicate the onset of the deconfinement phase transition [1]\ , making ratio fluctuations a promising observable to further characterize the transition and possibly reveal signatures of the conjectured critical point as suggested by lattice calculations of quark number susceptibiliti es at finite mu_B [2]. Kaons and protons carry large parts of the conserve d quantities strangeness and baryon number. Their correlation\, reflected in the kaon-to-proton ratio fluctuations\, is expected to undergo a signif icant change at the anticipated parton-hadron phase boundary [3].\nResults on (K+ + K−)/(p + pbar) and K+/p fluctuations in heavy-ion collisions w ill be presented for the first time. At 5 energies between sqrt(s_NN) = 6. 3 and 17.3 GeV\, sigma_dyn has been evaluated in central Pb+Pb collisions. For both ratios\, a fast transition from positive sigma_dyn at low SPS en ergies to negative values at the higher energies is observed\, an energy d ependence that is not reproduced by hadronic models. While hadronic transp ort models predict almost constant fluctuations in the SPS energy range\, a multiplicity scaling as suggested in [4] is also incompatible with the d ata. This study is complemented by new results on the centrality dependenc e of ratio fluctuations at sqrt(s_NN) = 17.3 GeV\, which confirm the syste matics recently reported at RHIC energies [5].\n\nReferences\n[1] C. Alt e t al. [NA49 Collaboration]\, Phys. Rev. C 77\, 024903 (2008) [arXiv:0710.0 118 [nucl-ex]].\n[2] M. Cheng et al.\, Phys. Rev. D 79\, 074505 (2009) [ar Xiv:0811.1006 [hep-lat]].\n[3] V. Koch\, A. Majumder and J. Randrup\, Phys . Rev. Lett. 95\, 182301 (2005) [arXiv:nucl-th/0505052].\n[4] V. Koch and T. Schuster\, Phys. Rev. C 81\, 034910 (2010) [arXiv:0911.1160 [nucl-th]]. \n[5] B. I. Abelev et al. [STAR Collaboration]\, Phys. Rev. Lett. 103\, 09 2301 (2009). [arXiv:0901.1795 [nucl-ex]].\n\nhttp://indico.cern.ch/contrib utionDisplay.py?contribId=427&sessionId=52&confId=30248 LOCATION:Imperial Palace Rotonde de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=427&sessionId=5 2&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Energy dependence of the freeze out eccentricity from azimuthal de pendence of HBT at STAR DTSTART;VALUE=DATE-TIME:20110527T163000Z DTEND;VALUE=DATE-TIME:20110527T165000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-300@cern.ch DESCRIPTION:Speakers: ANSON\, Christopher (The Ohio State University)\nNon -central heavy ion collisions at RHIC create an anisotropic participant zo ne of QCD matter under extreme conditions of energy and matter density. W hile this zone is initially out-of-plane-extended\, pressure gradients cau se the hot\, dense medium to expand preferentially in plane. Over time\, this expansion makes the shape more spherical\, perhaps even becoming exte nded in the in-plane direction. The change in shape is determined by the expansion and freeze-out time scales which depend\, in part\, on the early pressure gradients. As a result\, the freeze-out shape may provide a sen sitive probe of the Equation of State of hot QCD matter.\n\n The recen t RHIC Beam Energy Scan at $\\sqrt{s_{NN}}$ of 7.7\, 11.5\, and 39 GeV pro vides an opportunity to explore the energy dependence of the freeze out ec centricity. The new low energy data from STAR complements high statistics data sets at $\\sqrt{s_{NN}}$ of 62.4 and 200 GeV. The dependence of the HBT radius parameters on azimuthal angle relative to the reaction plane h ave been extracted. These dependences can be related to the freeze out ec centricity within the context of a blast wave model. We will present STAR 's most recent results on azimuthally-dependent HBT across a wide range of energies.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=300&s essionId=72&confId=30248 LOCATION:Imperial Palace Salon Berlioz AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=300&sessionId=7 2&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Direct photons at low transverse momentum -- a QGP signal in pp co llisions at LHC DTSTART;VALUE=DATE-TIME:20110527T165000Z DTEND;VALUE=DATE-TIME:20110527T171000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-303@cern.ch DESCRIPTION:Speakers: Prof. LIU\, Fuming (Huazhong Normal University)\nWe predict that direct photon production in pp collisions at 7~TeV\nwill get at least 10 times enhanced compared to the next to leading\norder pQCD pre dictions\, at low transverse momentum ($\\pt$ $\\lesssim$\n10~GeV/c)\, due to the thermal photon emissions from a quark gluon plasma\n(QGP) formed i n high multiplicity events. Thus the enhancement of\ndirect photon product ion at low $\\pt$ can be a QGP signal in pp collisions.\n\nhttp://indico.c ern.ch/contributionDisplay.py?contribId=303&sessionId=76&confId=30248 LOCATION:Imperial Palace Salon Haendel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=303&sessionId=7 6&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Exploring compressed nuclear matter with HADES DTSTART;VALUE=DATE-TIME:20110527T163000Z DTEND;VALUE=DATE-TIME:20110527T165000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-304@cern.ch DESCRIPTION:Speakers: KUGLER\, Andrej (Nuclear Physics Institute)\nIn the energy domain of 1-2 GeV kinetic energy per nucleon\, HADES has been perfo rmed systematic studies of electron-positron production in C+C\, Ar+KCl\, p+p\, d+p and p+Nb collisions. Our results demonstrate that electron pair emission in small collision systems\, such as C+C\, can essentially be e xplained as a superposition of independent N+N collisions with a dominant contribution from the p-n channel. \n\nThe comparison of the N+N reference spectrum with the di-electron invariant-mass distribution measured in Ar+ KC collisions shows a pronounced excess radiation. The properties of the e xcess as a function of the transverse mass are quantified. \n\nFurther med ium effects have been investigated in p+Nb interactions at 3.5 GeV by a di rect comparison to p+p reactions measured at the same energy. Differential dielectron production cross sections have been extracted and can be compa red in detail in the pi^{0}\, eta and the vector meson regions. The resul ts will be discussed and compared to the ones obtained in photo-induced re actions.\n \nIntriguing results were also obtained from the reconstructi on of hadrons with open and hidden strangeness in Ar+KCl collisions. While the measured abundance of all reconstructed particles are well described assuming thermalization\, the also reconstructed double-strange baryon Xi^ {-} appears about ten times more abundant than expected. Also\, the phi/om ega ratio is much larger than the one measured in N-N collisions and does not require any OZI suppression.\n\nFurther investigations of compressed n uclear matter by means of di-electrons as penetrating probes and strangene ss production will be followed up over the forthcoming years with an upgra ded HADES detector in Au+Au and Ag+Ag collisions.\n\nhttp://indico.cern.c h/contributionDisplay.py?contribId=304&sessionId=76&confId=30248 LOCATION:Imperial Palace Salon Haendel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=304&sessionId=7 6&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Triggered di-hadron correlations in PbPb collisions from the ALICE experiment DTSTART;VALUE=DATE-TIME:20110524T130000Z DTEND;VALUE=DATE-TIME:20110524T132000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-560@cern.ch DESCRIPTION:Speakers: Dr. ADARE\, Andrew (Yale University)\nAngular correl ations between unidentified hadron trigger and\nassociated particles are m easured by the ALICE experiment for $0.5 p_t^{(a)}$. The\nmodification of conditional yields in central Pb--Pb collisions is\nmeasured with respect to p--p ($I_{AA}$) and with respect to peripheral\nevents ($I_{CP}$). Sig nificant suppression is observed on the side\nopposing the trigger\, while an enhancement is measured on the near\nside. The latter result is a nota ble departure from RHIC measurements.\nIn addition\, the shape of the pair azimuthal distribution is examined\nin a variety of centrality categories for pairs in $|\\eta| 0.8$. A set of two-particle Fourier\ncomponents $V _{n\\Delta} \\equiv \\langle \\cos(n\\Delta\\phi)\\rangle$ are\ncomputed d irectly from the long-range azimuthal correlation\nfunctions. A series inc luding $V_{1\\Delta}$ to $V_{5\\Delta}$ describes\nthe data. For each $n$\ , a fit is applied over all $p_{T}$ bins\nsimultaneously to test the colle ctivity hypothesis $V_{n\\Delta} \\simeq\nv_n^{(t)} \\\, v_n^{(a)}$. This factorization hypothesis is satisfied at\nlow $p_{T}$ but not at higher $p _{T}$. The divergence between the data\nand the global fit provides a new measure of the onset of nonflow\ndominance in long-range correlations due to the away side jet. The\nfirst five single-particle $v_n$ coefficients a re presented as new\nresults from the global fit\, and are compared to $v_ n$ values\nmeasured by more established methods.\n\nhttp://indico.cern.ch/ contributionDisplay.py?contribId=560&sessionId=52&confId=30248 LOCATION:Imperial Palace Rotonde de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=560&sessionId=5 2&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Anomalous baryon production and its interplay with jet energy loss at RHIC and LHC energies DTSTART;VALUE=DATE-TIME:20110527T142000Z DTEND;VALUE=DATE-TIME:20110527T144000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-563@cern.ch DESCRIPTION:Speakers: LEVAI\, Peter (KFKI Research Institute for Particle and Nuclear Physics\, Budapest\, Hungary)\nThe study of the nuclear suppre ssion factor of charged hadrons and neutral pions in AuAu collisions at RH IC energies indicated the possible appearance of an anomaly at higher pT-s : although protons are expected to be produced from gluons\, but jet energ y loss is less effective for them comparing to pion suppression. Fragmenta tion function and jet energy loss based explanation can not reproduce this phenomena\, which opens a discussion on anomalous baryon production at hi gh-pt. We investigated the appearance of non-perturbative hadron productio n channels connected to the formation of strong non-abelian fields\, and t heir strength at RHIC and LHC energies. We performed calculations with tim e dependent strong fields and studied the quark-pair and diquark-pair prod uction at high-pT to produce leading quarks and diquarks to be hadronized. The numerical results are presented and discussed.\n\nhttp://indico.cern. ch/contributionDisplay.py?contribId=563&sessionId=66&confId=30248 LOCATION:Imperial Palace Salon Verdi AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=563&sessionId=6 6&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Untriggered di-hadron correlations in PbPb \\sqrt{s_{NN}} =2.76 T eV collisions from the ALICE experiment DTSTART;VALUE=DATE-TIME:20110524T134000Z DTEND;VALUE=DATE-TIME:20110524T140000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-566@cern.ch DESCRIPTION:Speakers: Dr. TIMMINS\, Anthony (University of Houston)\nWe pr esent measurements of untriggered di-hadron correlations as a function of centrality in Pb-Pb \\sqrt{s_{NN}} =2.76 TeV collisions\, for charged had rons with p_{T} > 0.15 GeV/c. These measurements provide a map of the bulk correlation structures in heavy-ion collisions. Contributions to these st ructures may come from jets\, initial density fluctuations\, elliptic flow \, and/or momentum conservation. We will decompose the measured correlatio n functions via a multi-parameter fit in order to extract the soft ridge\; the long range \\delta(\\eta) correlation on the nearside observed at RHI C energies. The effect of including higher harmonics (v_{3} and v_{4}) in this procedure will be discussed. We will compare our results to various t heoretical predictions based on differing schemes for the initial conditio ns. Finally\, we will investigate empirical scalings (such as the number o f binary collisions) for the various contributions as a function of centra lity\, which may also help determine their origin.\n\nhttp://indico.cern.c h/contributionDisplay.py?contribId=566&sessionId=52&confId=30248 LOCATION:Imperial Palace Rotonde de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=566&sessionId=5 2&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Deconfinement and chiral transition in QCD at finite temperature DTSTART;VALUE=DATE-TIME:20110524T132000Z DTEND;VALUE=DATE-TIME:20110524T134000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-228@cern.ch DESCRIPTION:Speakers: Dr. PETRECZKY\, Peter (BNL)\nI will discuss new latt ice results on the deconfinement and\nchiral aspects of the transition in QCD at nonzero temperature.\nI will report on calculations performed using the Highly Improved\nStaggered Quark (HISQ) action on Nt=6\, 8 and 12 lat tices. I will\nshow the continuum extrapolation for several quantities tha t are discussed in connection with the transition at nonzero temperature \ nas well as the determination of the chiral transition temperature in the continuum limit. I will also show new calculations with the \nasqtad actio n on Nt=12 lattices which\, when combined with the previous Nt=8 HotQCD ca lculations\, give a consistent result for the transition temperature in th e continuum limit. Finally I will discuss new findings for the equation of state for HISQ and asqtad actions.\n\nhttp://indico.cern.ch/contributionD isplay.py?contribId=228&sessionId=54&confId=30248 LOCATION:Imperial Palace Salon Haendel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=228&sessionId=5 4&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Cross section normalization in ALICE DTSTART;VALUE=DATE-TIME:20110526T150000Z DTEND;VALUE=DATE-TIME:20110526T152000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-602@cern.ch DESCRIPTION:Speakers: Dr. OYAMA\, Ken (University of Heidelberg)\nMeasurem ents of reference trigger cross sections were obtained with the ALICE dete ctor\, based on beam properties measured from van der Meer scans where con volution of the beam profiles were evaluated. The measurement is essential for absolute cross section determination of the physics processes.\n\nBas ed on this measurement\, inelastic cross sections characterizing proton-pr oton collisions at LHC energies were obtained with the ALICE detector with a detailed detector Monte-Carlo simulations. As second example\, cross se ctions of reference process\, with at least one charged particle is produc ed in pseudorapidity range of $-0.8\n\nhttp://indico.cern.ch/contributionD isplay.py?contribId=602&sessionId=64&confId=30248 LOCATION:Imperial Palace Salon Haendel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=602&sessionId=6 4&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:QCD thermodynamics at intermediate coupling DTSTART;VALUE=DATE-TIME:20110524T150000Z DTEND;VALUE=DATE-TIME:20110524T152000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-159@cern.ch DESCRIPTION:Speakers: Dr. SU\, Nan (Bielefeld University)\nThe weak-coupli ng expansion of the QCD free energy is known to order g^6*log[g]\, however \, the resulting series is poorly convergent at phenomenologically relevan t temperatures. I will discuss how the gauge invariant hard-thermal-loop p erturbation theory (HTLpt) reorganization of the calculation improves the convergence of the successive approximations to the QCD free energy. I wil l present new results of an HTLpt calculation of QCD thermodynamics to thr ee loops. The results of this calculation are consistent with lattice data down to 2-3T_c. This is a non-trivial result since\, in this temperature regime\, the QCD coupling constant is neither infinitesimally weak nor inf initely strong with g~2\, or equivalently alpha_s~0.3. Therefore\, we have a crucial test of the quasiparticle picture in the intermediate coupling regime. Our results suggest that HTLpt provides a systematic framework tha t can be used to calculate static and dynamic quantities for temperatures relevant at LHC.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId =159&sessionId=54&confId=30248 LOCATION:Imperial Palace Salon Haendel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=159&sessionId=5 4&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Medium induced collinear radiation from soft collinear effective t heory (SCET) DTSTART;VALUE=DATE-TIME:20110527T171000Z DTEND;VALUE=DATE-TIME:20110527T173000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-112@cern.ch DESCRIPTION:Speakers: Mr. D'ERAMO\, Francesco (MIT)\nThe propagation of ha rd partons through the strongly interacting matter created in high energy heavy-ion collisions involves widely separated scales. The methods of Effe ctive Field Theories (EFT) can provide a factorized description at lowest nontrivial order\, and a formalism where the correction to this factorizat ion are calculable systematically order by order in the small ratios betwe en the different scales. In this talk I will present our recent results on the calculation of the spectrum of the gluons emitted by the hard parton\ , where the radiated gluons are collinear with the incoming hard parton an d with arbitrary energy (not necessarily much softer than the energy of th e hard parton). I will also briefly discuss how to extend the analysis to include the emission of gluons collinear in arbitrary directions and gluo ns with all the components of their momentum scaling as the medium charact eristic energy scale (soft gluons). In particular I will show how powerful concepts like collinear gauge invariance and reparameterization invarianc e simplify the derivation of the effective Lagrangian.\n\nhttp://indico.ce rn.ch/contributionDisplay.py?contribId=112&sessionId=74&confId=30248 LOCATION:Imperial Palace Salon Verdi AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=112&sessionId=7 4&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Open heavy flavor physics in the muon channel with ALICE in pp col lisions at 7 TeV and PbPb at 2.76 TeV DTSTART;VALUE=DATE-TIME:20110523T155000Z DTEND;VALUE=DATE-TIME:20110523T161000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-609@cern.ch DESCRIPTION:Speakers: ZHANG\, Xiaoming (Laboratoire de Physique Corpuscula ire\, Clermont-Ferrand)\nHeavy-quark production is one of the probes for t he investigation of the properties\nof the high-density medium formed in h eavy-ion collisions. This investigation requires also the study of proton- proton collisions. Besides providing the necessary baseline for nucleus-nu cleus collisions\, proton-proton collisions are of great interest\, also i n their own right\, since they allow to test perturbative QCD at unprecede nted low Bjorken-x values. In this contribution\, we measure the heavy-fla vour production by detecting single muons from semi-leptonic decays.\nAfte r a description of the ALICE muon spectrometer\, we will present the resul ts on the\nproduction of single muons from heavy flavour decays at forward rapidity (2.5 \n\nhttp://indico.cern.ch/contributionDisplay.py?contribId= 609&sessionId=98&confId=30248 LOCATION:ImpErial Palace Salon Ravel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=609&sessionId=9 8&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Interference effects in medium--induced gluon radiation DTSTART;VALUE=DATE-TIME:20110523T134000Z DTEND;VALUE=DATE-TIME:20110523T140000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-399@cern.ch DESCRIPTION:Speakers: Dr. CASALDERREY SOLANA\, Jorge (CERN)\nThe recent re sults at the LHC on jet quenching in heavy ion\ncollisions call for a\nfun damental understanding of the evolution of a relatively hard jet\npropagat ing through a QCD medium like the quark--gluon plasma. As a first\nstep in that sense\, we consider the interference pattern for the\nmedium--induce d gluon radiation produced by a color singlet\nquark--antiquark antenna em bedded in a QCD medium with size $L$.\nThis setup is indeed well suited fo r studies of coherence phenomena like\nangular ordering. We focus on the m ost favorable kinematics for\nmedium--induced gluon radiation in the BDMPS --Z regime\, that is\ntransverse momenta $k_\\perp \\sim \\sqrt{\\hat q L} $\, short formation\ntimes $\\tau_f \\ll L$\, and relatively large emissio n angles $\\theta\n\\gtrsim \\theta_f\\equiv(\\hat q/\\omega)^{1/3}$ ($\\h at q$ is the medium\n`jet quenching' parameter and $\\omega$ is the gluon energy).\nWe demonstrate that\, for a dipole opening angle $\\theta_{q\\ba r q}$\nlarger than $\\theta_f$\, there is no interference between\nmedium- -induced gluon emissions by the quark and the antiquark.\nThat is\, the in --medium contribution to the antenna pattern is the\nincoherent superposit ion of two individual BDMPS--Z spectra.\nPhysically\, this is\nso since\, unlike the direct emissions which can be delocalized anywhere\nthroughout the medium\, the interference terms are non--zero only for the\nvery early emissions\, such that the size of the $q\\bar q$ dipole\nat the time of e mission be smaller than\nthe transverse wavelength of the emitted gluon.\n \nhttp://indico.cern.ch/contributionDisplay.py?contribId=399&sessionId=4&c onfId=30248 LOCATION:Imperial Palace Salon Ravel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=399&sessionId=4 &confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:The second act of hydro: shocks and sounds from initial perturbati ons and jets DTSTART;VALUE=DATE-TIME:20110523T130000Z DTEND;VALUE=DATE-TIME:20110523T132000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-49@cern.ch DESCRIPTION:Speakers: SHURYAK\, Edward (Stony Brook University)\nRecently there was significant progress in account for several lower\nharmonics of the ``Little Bang"\, especially the so called triangular flow\,\nascribed to fluctuations of the initial conditions. We discuss this\nproblem more generally\, combining many harmonics coherently into\ncertain patterns of sound propagation. Analytic solution for all harmonics\nis found for the s o called ``Gubser flow"\, with complete Green function\nobtained. Another source of perturbations\nwhich can be studied using our results are waves induced by quenching jets.\nWe argue that for large energy loss shock wave s should form\, as well as\nthe so called jet/fireball edge\, separating u nperturbed and excited matter.\nWe discuss how this edge should be visible experimentally\, perhaps on \\\nevent-by-event basis.\n\nhttp:// indico.cern.ch/contributionDisplay.py?contribId=49&sessionId=45&confId=302 48 LOCATION:Imperial Palace Salle de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=49&sessionId=45 &confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Next-to-leading order structure function for DIS off a large nucle us DTSTART;VALUE=DATE-TIME:20110523T144000Z DTEND;VALUE=DATE-TIME:20110523T150000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-42@cern.ch DESCRIPTION:Speakers: CHIRILLI\, Giovanni Antonio (Lawrence Berkeley Nati onal Laboratory (LBNL))\nThe high-energy behavior of amplitudes in gauge t heories can be reformulated in terms \nof the evolution of Wilson-line ope rators. In the leading order this evolution is governed by the non-linear Balitsky-Kovchegov (BK) equation. \nIn order to see if this equation is re levant for existing or future DIS accelerators\n(like EIC or LeHC) one nee ds to know how large are the next-to-leading order (NLO) corrections. \nIn addition\, the NLO corrections define the scale of the running-coupling c onstant in the BK equation and therefore determine the magnitude\nof the l eading-order cross sections.\nTo obtain then the structure function for DI S off a large nucleus at the NLO accuracy in $\\alpha_s$\, \nwe calculate the NLO contribution to the BK equation\nand the NLO photon impact factor\ , \nrelated to the probability of the virtual photon to split in a quark a nti-quark pair before scattering off the target.\nWe obtain for the first time an analytic expression in coordinate space of the NLO photon impact f actor.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=42&sessio nId=4&confId=30248 LOCATION:Imperial Palace Salon Ravel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=42&sessionId=4& confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Higher harmonic jet tomography as a probe of fluctuating initial c ondition geometries in A+A DTSTART;VALUE=DATE-TIME:20110527T134000Z DTEND;VALUE=DATE-TIME:20110527T140000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-43@cern.ch DESCRIPTION:Speakers: BETZ\, Barbara (Columbia University)\nWhile 2nd Four ier harmonics of jet quenching have been thoroughly explored in the litera ture and shown to be sensitive to (1) the underlying jet path length depen dence of energy loss and (2) the differences between the mean eccentricity predicted by Glauber and CGC/KLN models of initial conditions\, the sensi tivity of higher harmonics\, v_n(p_T\, b)\, to differences between the flu ctuation spectrum of geometries has remained relatively unexplored.\nWe de monstrate that higher azimuthal jet harmonics (n>2) of\nR_AA(p_T\,phi) and I_AA(p_T\,phi) are remarkably insensitive\nto the differences of geometri cal density fluctuations comparing between Glauber and CGC/KLN models of t he initial conditions. Therefore\, the differential elliptic v_2(p_T) vs. v_2^(I_AA)(p_T) moment correlation between the 2nd moment of monojet R_AA and dijet I_AA nuclear modifications factors remains the most sensitive pr obe to differentiate between Glauber and CGC/KLN initial state sQGP geomet ries.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=43&session Id=66&confId=30248 LOCATION:Imperial Palace Salon Verdi AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=43&sessionId=66 &confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:ALICE detector upgrades DTSTART;VALUE=DATE-TIME:20110526T140000Z DTEND;VALUE=DATE-TIME:20110526T142000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-464@cern.ch DESCRIPTION:Speakers: Prof. PEITZMANN\, Thomas (Universiteit Utrecht)\nThe ALICE experiment is specifically designed for the study of strongly inter acting matter as created in heavy ion collisions at LHC. With some of its particular features\, like the very good measurement of low momentum parti cles and the particle identification capabilities it also provides unique measurements in p+p collisions. However\, very recent developments in heav y ion physics suggest that some more enhanced measurement capabilities wil l be strongly desirable to obtain a deeper understanding of the new matter created.\nALICE is setting up a program of detector upgrades\, which coul d to a large extent be installed in the long LHC shutdown foreseen for 201 7/18\, to address these new scientific challenges. Projects considered inc lude an upgrade of the inner tracking system (ITS)\, the installation of a new forward calorimeter (FOCAL)\, the extension of the muon spectrometer (MFT\, muon forward tracker)\, the installation of a detector with enhance d particle identification at high momentum (VHMPID)\, and additional detec tors enhancing the capabilities for diffractive physics (AD = ALICE Diffra ctive). An increased rate capability of the largest detector in ALICE\, th e time projection chamber (TPC)\, is also under investigation\, and it is foreseen to improve the data acquisition and high level trigger systems (D AQ & HLT) to achieve more bandwidth and to use more sophisticated and comp lex triggers. We will discuss the scientific frontiers and will present th e corresponding upgrade projects under study for the ALICE experiment.\n\n http://indico.cern.ch/contributionDisplay.py?contribId=464&sessionId=64&co nfId=30248 LOCATION:Imperial Palace Salon Haendel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=464&sessionId=6 4&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Charmonium and open-charm production in p-A collisions at the SPS DTSTART;VALUE=DATE-TIME:20110527T142000Z DTEND;VALUE=DATE-TIME:20110527T144000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-488@cern.ch DESCRIPTION:Speakers: Dr. CORTESE\, Pietro (Univ. del Piemonte Orientale\, Dip.Scienze eTecnologie)\np-A collisions provide an essential reference f or the study of J/psi suppression in heavy-ion data since they allow to ev aluate cold nuclear matter effects. These include initial state effects li ke shadowing and parton energy loss and final state effects like J/psi bre akup in the collisions with cold nuclear matter.\n\nTo evaluate these\, NA 60 has measured J/psi production in p-A collisions at SPS energies with se ven nuclear targets. In this analysis the J/psi cross section has been com pared with open-charm production that is detected in the NA60 experiment t hrough the simultaneous semi-muonic decay of D meson pairs. The comparison of the production of closed-charm with its natural reference allows to ha ve some insight on how the interplay of the different processes gives rise to the observed (effective) J/psi suppression.\n\nhttp://indico.cern.ch/c ontributionDisplay.py?contribId=488&sessionId=53&confId=30248 LOCATION:Imperial Palace Rotonde de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=488&sessionId=5 3&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:A comprehensive study of the high-pt particle correlations in pp collisions at LHC/ALICE DTSTART;VALUE=DATE-TIME:20110524T140000Z DTEND;VALUE=DATE-TIME:20110524T142000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-487@cern.ch DESCRIPTION:Speakers: MAO\, Yaxian (CCNU\, Wuhan & LPSC\, Grenoble)\nTwo-p article correlation with the high-pT triggers allows the study of the hard scattering phenomena like soft QCD radiation [1\, 2]\, angular ordering [ 3] or jet frag- mentation in the low and intermediate pT region [4\, 5] wh ere full jet reconstruction is challenging. An analysis of the first ALICE pp data where charged particle\, π0 and isolated photon are used as trig ger particles will be presented. These measurements will serve as a refere nce for the same measurements in Pb-Pb collisions. A sensitivity of the as sociated particle momentum projection into the direction of the trigger pa rticle\, xE = −p⃗Th± · p⃗Ttrig / | p⃗Ttrig |2\, can be used to e xtract the average trigger particle momentum fraction and the jet imbalanc e function\, whereas the γ-hadron correlations can be used to study the j et fragmentation function directly. The quest for the nuclear modification of the partonic properties in heavy ion collisions\, using above mentione d quantities\, will be also outlined.\n\nReferences\n[1] D. Boer and W. Vo gelsang\, Phys. Rev. D69\, 094025 (2004)\, hep-ph/0312320. [2] R. Perez-Ra mos\, F. Arleo\, and B. Machet\, Phys. Rev. D78\, 014019 (2008)\, 0712.221 2. [3] Y. L. Dokshitzer\, D. Diakonov\, and S. Troian\, Phys.Rept. 58\, 26 9 (1980). [4] PHENIX\, S. S. Adler et al.\, Phys. Rev. D74\, 072002 (2006) \, hep-ex/0605039.\n[5] PHENIX Collaboration\, A. Adare et al.\, Phys. Rev . D 82\, 072001 (2010)\, arXiv:1006.1347.\n\nhttp://indico.cern.ch/contrib utionDisplay.py?contribId=487&sessionId=52&confId=30248 LOCATION:Imperial Palace Rotonde de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=487&sessionId=5 2&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Charmonium spectral functions at finite momenta in the quark-gluon plasma from lattice QCD DTSTART;VALUE=DATE-TIME:20110524T142000Z DTEND;VALUE=DATE-TIME:20110524T144000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-472@cern.ch DESCRIPTION:Speakers: Prof. NONAKA\, Chiho (Nagoya University)\nFrom pheno menological considerations\, J/psi suppression was proposed \nas a signatu re of QGP production in relativistic heavy ion collisions\, \nand has been considered as one of the most promising ones [1]. \nHowever recent lattic e QCD calculations show that charmonia survive even above the \ncritical t emperature [2]\, which presents the possibility that the scenario of J/psi \nsuppression in relativistic heavy ion collisions may change. \nTo under stand the relativistic heavy ion collision physics we need to take into ac count \ndynamics of the fireball which is produced after collisions. There fore the detailed study \non spectral functions of charmonia at finite mom enta from the first principle \ncalculation would shed light on the unders tanding of the J/psi suppression mechanism \nin relativistic heavy ion col lisions. \n\nWe study the charmonium spectral functions at finite momenta in the quark-gluon \nplasma on 64^3 × N_t(=96(T/Tc=0.78)\,54(1.38)\,46(1. 62)\,40(1.87)\,32(2.33)) \nquenched anisotropic lattices with anisotropy a _s /a_t= 4\, analyzing correlation \nfunctions of charmonia by the maximum entropy method (MEM) which is a \nvery useful and powerful tool to analyz e spectral functions from lattice QCD simulations [3]. \nWe show detailed features of charmonium spectral functions of pseudoscalar and \nvector ch annels and modification of the dispersion relation \nat finite momenta and discuss medium effect on them in QGP. \n\n\n[1] T. Matsui and H. Satz\, P hys. Lett. B 178 (1986) 416\, \n T. Hashimoto\, K. Hirose\, T. Kanki a nd O. Miyamura\, Phys. Rev. Lett. 57 (1986) 2123.\n[2] M. Asakawa and T. H atsuda\, Phys. Rev. Lett. 92 (2004) 012001\, \n S. Datta\, F. Karsch\, P. Petreczky and I. Wetzorke\, Phys. Rev. D 69 (2004) 094507\, \n H. Iida\, T. Doi\, N. Ishii\, H. Suganuma and K. Tsumura\, Phys. Rev. D 74 (2 006) 074502\, \n T. Umeda\, Phys. Rev. D 75 (2007) 094502.\n[3] M. Asa kawa\, T. Hatsuda and Y. Nakahara\, Prog. Part. Nucl. Phys. 46 (2001) 459. \n\nhttp://indico.cern.ch/contributionDisplay.py?contribId=472&sessionId=6 3&confId=30248 LOCATION:Imperial Palace Salon Ravel AB URL:http://indico.cern.ch/contributionDisplay.py?contribId=472&sessionId=6 3&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Particle multiplicities in high-energy hadronic collisions at RHIC /LHC from CGC with local rcBK evolution DTSTART;VALUE=DATE-TIME:20110526T150000Z DTEND;VALUE=DATE-TIME:20110526T152000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-476@cern.ch DESCRIPTION:Speakers: Prof. FUJII\, Hirotsugu (University of Tokyo)\nA col or glass condensate (CGC) model for particle productions at collider energ ies is confronted with the data at RHIC and LHC. When applying the CGC pic ture to high-energy scatterings at LHC (or higher) energies\, we need to i nclude the effects of the running coupling and the transverse expansion of the colliding hadrons. These two are appropriately incorporated here. Mai n features of our model include\n1) fluctuations of the transverse positio ns of the nucleons in the projectile\,\n2) the Gaussian shape for the tran sverse profile of a nucleon to account for the transverse expansion of the nucleon with increasing energy\, and\n3) the x-evolution of the unintegra ted gluon distribution by the running-coupling Balitsky-Kovchegov (rcBK) e quation which is applied locally in the impact parameter space. We study t he influence of initial condition for rcBK equation on particle production in high energy hadronic collisions. Specifically\, the initial conditions provided by i) the naive McLerran-Venugopalan (MV) model and ii) the runn ing coupling MV model with adjustable\nparameters are examined. The use of running-coupling MV model as the initial condition is necessary for the c onsistency with the evolution equation which includes the effects of the r unning coupling.\n\nhttp://indico.cern.ch/contributionDisplay.py?contribId =476&sessionId=62&confId=30248 LOCATION:Imperial Palace Rotonde de l'Europe (150) URL:http://indico.cern.ch/contributionDisplay.py?contribId=476&sessionId=6 2&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Influence of tubular initial conditions on two-particle correlatio ns DTSTART;VALUE=DATE-TIME:20110526T142000Z DTEND;VALUE=DATE-TIME:20110526T144000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-474@cern.ch DESCRIPTION:Speakers: GRASSI\, Frederique (Instituto de Fisica-Universidad e de Sao Paulo)\nRelativistic nuclear collisions data on two-particle corr elations exhibit structures as function of relative azimuthal angle and ra pidity. A unified description of these near-side and awayside structures i s proposed for low to moderate transverse momentum. It is based on the com bined effect of tubular initial conditions and hydrodynamical expansion.\n \nA 3+1 hydrodynamic approach with fluctuating tubular initial conditions\ , in addition to reproducing both the near and away-side structures [1]\, leads to a good qualitative agreement with various data: dependence on tri gger/associated particle tranverse momentum and on centrality [2]\, differ ence in the away-side structure for in-plane/out-of plane triggers [3]. So me results on the relation between triangularity and triangular flow have also been obtained for this approach [4].\n\nSince 3+1 hydrodynamics is a complicated scenario\, we have also studied the effect of single tubes in 2+1 hydrodynamics. Contrary to expectations\, the hydrodynamic solution sh ows that the high energy density tubes (leftover from the initial particle interactions) give rise to particle emission in two directions and this i s what leads to the various structures [2]\, including the effect of in-pl ane/out-of plane triggers [3]. This description is sensitive to some\nof t he initial tube parameters and may provide a probe of the strong interacti on.\n\n[1] J. Takahashi\, B.M. Tavares\, W.L.Qian\, R. Andrade\, F. Grassi \, Y. Hama\, T. Kodama\, N.Xu\, Phys. Rev. Lett. 103 (2009) 242301 (arXiv: 0902.4870)\,\n[2] R.P.G. Andrade\, F. Grassi\, Y. Hama\,W.-L. Qian\, Nucl. Phys. A854 (2011) 81 (arXiv:1008.0139)\,\n[3] ] R.P.G. Andrade\, F. Grassi \, Y. Hama\, W.-L. Qian\, work in progress\,\n[4] F.G. Gardim\, F. Grassi\ , Y. Hama\, M. Luzum\, J.-Y. Ollitrault\, work in progress.\n\nhttp://indi co.cern.ch/contributionDisplay.py?contribId=474&sessionId=62&confId=30248 LOCATION:Imperial Palace Rotonde de l'Europe (150) URL:http://indico.cern.ch/contributionDisplay.py?contribId=474&sessionId=6 2&confId=30248 END:VEVENT BEGIN:VEVENT SUMMARY:Pion quenching and tomography from RHIC to LHC in the WHDG model DTSTART;VALUE=DATE-TIME:20110526T134000Z DTEND;VALUE=DATE-TIME:20110526T140000Z DTSTAMP;VALUE=DATE-TIME:20130518T164902Z UID:indico-contribution-30248-187@cern.ch DESCRIPTION:Speakers: HOROWITZ\, William (University of Cape Town)\nWe pre sent parameter-free predictions from the WHDG (radiative+elastic+geometric fluctuation) energy loss model for high pT pion suppression in A+A at 2.7 6 and 5.5 ATeV. The input density is constrained from a rigorous statistic al analysis of RHIC pi0 quenching data. The predictions are consistent wit h the recent _charged_ hadron RAA data from ALICE only within the current very large systematic uncertainty (due to the unmeasured reference p + p s pectrum). However\, our constrained prediction of central to peripheral pi on R_cp(pT)\, in which reference p + p spectra uncertainties cancel\, is f ound to be over-quenched by ~two sigma relative to the charged hadron ALIC E R_cp data at all pT\n\nhttp://indico.cern.ch/contributionDisplay.py?cont ribId=187&sessionId=61&confId=30248 LOCATION:Centre Bonlieu Salle de l'Europe URL:http://indico.cern.ch/contributionDisplay.py?contribId=187&sessionId=6 1&confId=30248 END:VEVENT END:VCALENDAR