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SUMMARY:Discussion on collectivity in small systems
DTSTART;VALUE=DATE-TIME:20160523T160000Z
DTEND;VALUE=DATE-TIME:20160523T170000Z
DTSTAMP;VALUE=DATE-TIME:20190325T174540Z
UID:indico-contribution-177863-1978312@indico.cern.ch
DESCRIPTION:Speakers: Alexander Milov (Weizmann Institute of Science (IL))
 \, Piotr Bozek (AGH University of Science and Technology)\nhttps://indico.
 cern.ch/event/469857/contributions/1978312/
LOCATION:Centro de Congressos\, Instituto Superior Técnico\, Alameda Camp
 us Grande Anfiteatro
URL:https://indico.cern.ch/event/469857/contributions/1978312/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Signatures of collectivity in small systems
DTSTART;VALUE=DATE-TIME:20160523T100000Z
DTEND;VALUE=DATE-TIME:20160523T103000Z
DTSTAMP;VALUE=DATE-TIME:20190325T174540Z
UID:indico-contribution-177863-1978359@indico.cern.ch
DESCRIPTION:Speakers: Wei Li (Rice University (US))\nhttps://indico.cern.c
 h/event/469857/contributions/1978359/
LOCATION:Centro de Congressos\, Instituto Superior Técnico\, Alameda Camp
 us Grande Anfiteatro
URL:https://indico.cern.ch/event/469857/contributions/1978359/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Hydro in small systems
DTSTART;VALUE=DATE-TIME:20160523T110000Z
DTEND;VALUE=DATE-TIME:20160523T113000Z
DTSTAMP;VALUE=DATE-TIME:20190325T174540Z
UID:indico-contribution-177863-1978357@indico.cern.ch
DESCRIPTION:Speakers: Harri Niemi (Frankfurt Institute for Advanced Studie
 s)\nhttps://indico.cern.ch/event/469857/contributions/1978357/
LOCATION:Centro de Congressos\, Instituto Superior Técnico\, Alameda Camp
 us Grande Anfiteatro
URL:https://indico.cern.ch/event/469857/contributions/1978357/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Initial state collectivity (CGC and related approaches) including 
 longitudinal structures
DTSTART;VALUE=DATE-TIME:20160523T103000Z
DTEND;VALUE=DATE-TIME:20160523T110000Z
DTSTAMP;VALUE=DATE-TIME:20190325T174540Z
UID:indico-contribution-177863-1978380@indico.cern.ch
DESCRIPTION:Speakers: Alexander Kovner (University of Connecticut)\nhttps:
 //indico.cern.ch/event/469857/contributions/1978380/
LOCATION:Centro de Congressos\, Instituto Superior Técnico\, Alameda Camp
 us Grande Anfiteatro
URL:https://indico.cern.ch/event/469857/contributions/1978380/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Measurement of long-range azimuthal anisotropies in $pp$ and $p$+P
 b collisions with the ATLAS detector.
DTSTART;VALUE=DATE-TIME:20160523T153000Z
DTEND;VALUE=DATE-TIME:20160523T160000Z
DTSTAMP;VALUE=DATE-TIME:20190325T174540Z
UID:indico-contribution-177863-1978383@indico.cern.ch
DESCRIPTION:Speakers: Brian Cole (Columbia University (US))\n(speaker know
 n later)\nATLAS measurements of correlations between particle pairs in rel
 ative\nazimuthal angle ($\\Delta\\phi$) and  pseudorapidity separation\n($
 \\Delta\\eta$)\, in $pp$ collisions at $\\sqrt{s}$=2.76\, 5.02 and\n13~TeV
 \, and in $p$+Pb collisions at $\\sqrt{s_{\\mathrm{NN}}}$=5.02~TeV\nare pr
 esented. Prior measurements have shown that in $pp$ collisions\nwith a lar
 ge multiplicity of produced particles\, a long-range\nstructure\,commonly 
 called the ``ridge''\, develops along $\\Delta\\eta$\nat $\\Delta\\phi\\si
 m$0. However\, due to the presence of the large\naway-side jet\, the full 
 $\\Delta\\phi$ dependence of the long-range\ncorrelation could not be stud
 ied previously. In this analysis\, a\ntemplate fitting procedure is implem
 ented to determine the\ncontributions from dijets to the correlations\, us
 ing low-multiplicity\nevents\, and extract the genuine long-range correlat
 ion. The Fourier\nharmonics of the genuine long-range correlation for orde
 rs $n$=2--4\nare extracted\, and their dependence on $p_{\\mathrm{T}}$\,\n
 event-multiplicity and collision energy are studied. It is shown that\nthe
  second Fourier coefficient\, $v_{2\,2}$\, dominates the long range\ncorre
 lation\, with small but significant contributions from $v_{3\,3}$\nand $v_
 {4\,4}$. The $v_{2\,2}$ is shown to factorize into the product of\nsingle-
 particle anisotropies $v_2$. A large $v_2$ is shown to be\npresent even in
  events with a small multiplicity of produced\nparticles\, implying that t
 he long-range correlations are not unique to\nrare high multiplicity event
 s\, but are present even in low\nmultiplicity $pp$ collisions. Comparisons
  to the $v_{n\,n}$ and $v_{n}$\nobtained when applying the template fittin
 g procedure to $p$+Pb\ncollisions are also presented. These measurements c
 an help determine\nif the long range correlations in $pp$ and $p$+Pb colli
 sions arise\nfrom similar mechanisms or not.\n\nhttps://indico.cern.ch/eve
 nt/469857/contributions/1978383/
LOCATION:Centro de Congressos\, Instituto Superior Técnico\, Alameda Camp
 us Grande Anfiteatro
URL:https://indico.cern.ch/event/469857/contributions/1978383/
END:VEVENT
BEGIN:VEVENT
SUMMARY:New flow results in ALICE from multiparticle azimuthal correlation
 s
DTSTART;VALUE=DATE-TIME:20160523T113000Z
DTEND;VALUE=DATE-TIME:20160523T120000Z
DTSTAMP;VALUE=DATE-TIME:20190325T174540Z
UID:indico-contribution-177863-1978330@indico.cern.ch
DESCRIPTION:Speakers: Ante Bilandzic (Technische Universitaet Muenchen (DE
 ))\nMultiparticle azimuthal correlations are utilized in anisotropic flow 
 stud- ies as observables sensitive to the properties of Quark-Gluon Plasma
  (QGP)\, an extreme state of matter which can be produced in ultra-relativ
 istic heavy- ion collisions. We will present the first results [1] for ell
 iptic (v2)\, triangular (v3) and quadrangular flow (v4) of charged particl
 es in Pb–Pb collisions at √sNN = 5.02 TeV recorded by ALICE during the
  LHC Run 2 operations. The comparison of experimental measurements to vari
 ous theoretical calculations will be discussed.\nIn addition\, results are
  reported for so-called symmetric cumulants. De- veloped by ALICE\, these 
 new multiparticle observables depend only on the correlations between even
 t-by-event amplitude fluctuations of anisotropic flow harmonics vn\, and a
 re therefore independent on the corresponding sym- metry planes. The centr
 ality dependence of correlation between fluctuations of the elliptic\, v2\
 , and quadrangular\, v4\, flow harmonics\, as well as of anti- correlation
  between v2 and triangular\, v3\, flow harmonics will be discussed in two 
 different regimes for the initial stages: geometry-dominated (in mid- cent
 ral heavy-ion collisions) and fluctuation-dominated (in the most central h
 eavy-ion collisions).\nThe measurement of individual flow harmonics togeth
 er with symmetric cumulants further constrain details of initial stages an
 d the transport prop- erties of the produced QGP. These results offer a un
 ique opportunity to test the validity of the hydrodynamic picture and to d
 iscriminate between vari- ous possibilities for the temperature dependence
  of shear viscosity to entropy density ratio of the produced QGP.\n\nhttps
 ://indico.cern.ch/event/469857/contributions/1978330/
LOCATION:Centro de Congressos\, Instituto Superior Técnico\, Alameda Camp
 us Grande Anfiteatro
URL:https://indico.cern.ch/event/469857/contributions/1978330/
END:VEVENT
BEGIN:VEVENT
SUMMARY:PHENIX Results on Small System Collectivity
DTSTART;VALUE=DATE-TIME:20160523T133000Z
DTEND;VALUE=DATE-TIME:20160523T140000Z
DTSTAMP;VALUE=DATE-TIME:20190325T174540Z
UID:indico-contribution-177863-1978339@indico.cern.ch
DESCRIPTION:Speakers: Javier Orjuela Koop (University of Colorado Boulder)
 \nSmall collision systems have long been considered a mere testing ground 
 to understand how the partonic structure of the nucleus affects the format
 ion of QGP in larger A+A collisions. However\, recent measurements challen
 ge this picture\, suggesting the existence of collective behavior in small
  systems at RHIC and LHC energies. It is not currently clear whether these
  observations can be understood in terms of the hydrodynamic evolution of 
 a thermalized medium\, or if they originate instead from initial state eff
 ects. A key test to elucidate the matter is to carefully control the initi
 al geometry of the collision and correlate it with the final-state particl
 e emission. This talk will present the latest set of PHENIX measurements o
 f flow observables in systems with one\, two\, and three initial hotspots-
 --(p\,d\,3He)+Au at 200 GeV\, comprising azimuthal two-particle correlatio
 ns and anisotropy coefficients v_n. We will present comparisons with a var
 iety of available theory calculations\, and we will discuss opportunities 
 for the further study of small system collectivity within the context of t
 he RHIC d+Au beam energy scan program.\n\nhttps://indico.cern.ch/event/469
 857/contributions/1978339/
LOCATION:Centro de Congressos\, Instituto Superior Técnico\, Alameda Camp
 us Grande Anfiteatro
URL:https://indico.cern.ch/event/469857/contributions/1978339/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Latest news on collectivity in high-multiplicity pp collisions at 
 CMS
DTSTART;VALUE=DATE-TIME:20160523T143000Z
DTEND;VALUE=DATE-TIME:20160523T150000Z
DTSTAMP;VALUE=DATE-TIME:20190325T174540Z
UID:indico-contribution-177863-1978304@indico.cern.ch
DESCRIPTION:Speakers: Maxime Guilbaud (Rice University (US))\nObservation 
 of a long-range\, near-side\, two-particle correlation (known as the “Ri
 dge”) in high-multiplicity pp and pPb collisions opened up new opportuni
 ties of exploring novel QCD dynamics in small collision systems. While ext
 ensive studies of this long-range correlation phenomenon in pPb collisions
  have revealed its collective properties\, the nature of the ridge in pp c
 ollisions still remains unknown. Latest measurements of long-range particl
 e correlations in high-multiplicity pp collisions are presented. Anisotrop
 y Fourier harmonics v2 and v3 are extracted as a function of pT and multip
 licity\, for charged particles\, and identified $K^0_s$ and $\\Lambda$ had
 rons. A multi-paricle cumulant technique is also used to explore the colle
 ctive nature of the long-range correlations. The results are directly comp
 ared with data in pPb and PbPb collisions\, which shed light on the physic
 al origin on the novel collective correlations in small systems.\n\nhttps:
 //indico.cern.ch/event/469857/contributions/1978304/
LOCATION:Centro de Congressos\, Instituto Superior Técnico\, Alameda Camp
 us Grande Anfiteatro
URL:https://indico.cern.ch/event/469857/contributions/1978304/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Summary and news from LHCb (including First measurements of long-r
 ange near-side angular correlations in √sNN = 5TeV proton-lead collision
 s in the forward region with LHCb)
DTSTART;VALUE=DATE-TIME:20160523T140000Z
DTEND;VALUE=DATE-TIME:20160523T143000Z
DTSTAMP;VALUE=DATE-TIME:20190325T174540Z
UID:indico-contribution-177863-1978329@indico.cern.ch
DESCRIPTION:Speakers: Johan Blouw (Max-Planck-Gesellschaft (DE))\nProton-l
 ead and lead-proton data taking in 2013 has allowed LHCb to expand its cor
 e physics program into the regime of heavy ion physics. The results obtain
 ed so far will be briefly summarized. They include the measurement of the 
 nuclear modification factors and forward-backward production of prompt and
  displaced $J/\\psi$\, $\\Psi(2S)$ and $\\Upsilon$s\, and the production o
 f prompt $D^0$ mesons. $Z$-production in proton-lead collisions and angula
 r particle correlations have also been measured for events of varying char
 ged particle activity.\nIn 2015 the LHCb experiment expand its scope furth
 er in heavy ion physics and participated for the first time in the data-ta
 king of Pb-Pb collisions. Simulation studies showed that up to semi-centra
 l lead-lead collisions can be analysed. Furthermore\, a system for the inj
 ection of small amounts of gas into the LHCb collision area has been used\
 , which allows fixed target physics with proton and lead beams. The physic
 s reach of the experiment as well as first results from exploratory studie
 s with Pb-Pb and fixed target interactions will be presented.\n\nhttps://i
 ndico.cern.ch/event/469857/contributions/1978329/
LOCATION:Centro de Congressos\, Instituto Superior Técnico\, Alameda Camp
 us Grande Anfiteatro
URL:https://indico.cern.ch/event/469857/contributions/1978329/
END:VEVENT
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