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Hubert Spiesberger (Univ. Mainz)27/03/2012, 09:00Heavy flavoursI present predictions for the inclusive production of D- and B-mesons at the CERN LHC in the general-mass variable-flavor-number scheme at next-to-leading order, an approach which takes into account the finite mass of the heavy quarks. Numerical results are compared to data where available. Measurements at large rapidities have the potential to pin down models of intrinsic charm.Go to contribution page
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Adam Edward Barton (Lancaster University (GB))27/03/2012, 09:18Heavy flavoursATLAS has studied heavy flavour production in a variety of decay channels and inclusive signatures including charmed mesons, jets originating from b-quarks and inclusive muons and electrons. Differential production cross sections for beauty and charm are extracted from these signatures and compared with a variety of theoretical predictions.Go to contribution page
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Wolfram Erdmann (Paul Scherrer Institut (CH))27/03/2012, 09:36Heavy flavoursAbstract missingGo to contribution page
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Rosa Romita (GSI - Helmholtzzentrum fur Schwerionenforschung GmbH (DE))27/03/2012, 09:54Heavy flavoursALICE is the LHC experiment dedicated to the study of the Quark Gluon Plasma (QGP) in Pb-Pb collisions. Heavy quarks are ideal probes to explore the QGP formation and properties, since they experience the full collision history and are expected to be abundantly produced at the LHC. It is of great importance to measure the heavy flavor cross section not only in Pb-Pb collisions, but also in...Go to contribution page
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Prof. Antoni Szczurek (Cracow, INP & Rzeszow Univ.)27/03/2012, 10:12Heavy flavoursWe discuss charm production at LHC. The production of single $c \bar c$ pairs is calculated in the $k_t$-factorization approach. We use several unintegrated gluon distributions from the literature. Some of them include effect of small-$x$ saturation and fulfill Balitsky-Kovchegov evolution equation. The hadronization is included with the help of fragmentation functions found for the...Go to contribution page
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Karol Kovarik (KIT)27/03/2012, 11:00Heavy flavoursThe production of a prompt photon in association with a heavy-quark (charm or bottom) jet is a versatile process that can be used to study the structure of the proton and the nucleus. This process is extremely sensitive to the heavy quark PDFs, and can thus directly probe for intrinsic charm or bottom contributions. We present various predictions of this process at different colliders and...Go to contribution page
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Piotr Kotko27/03/2012, 11:18Heavy flavoursWe present the consistent treatment of heavy quarks in jet production processes in DIS at NLO accuracy. The method is based on the ACOT massive factorization scheme (Aivazis-Collins-Olness-Tung) which is already in use in global fits for PDFs. Extension of this method to jets faces the problem of infra-red singularities, which have to cancel between real and virtual corrections. Moreover,...Go to contribution page
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David Calvet (Univ. Blaise Pascal Clermont-Fe. II (FR))27/03/2012, 11:36Heavy flavoursThe inclusive and dijet production cross-sections have been measured for jets containing b-hadrons (b-jets) in proton-proton collisions at a centre-of-mass energy of sqrt(s) = 7 TeV. The b-jets are identified using either a lifetime-based method, where secondary decay vertices of b-hadrons in jets are reconstructed using information from the tracking detectors, or a muon-based method...Go to contribution page
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Zlatka Georgieva Staykova (University of Antwerp (BE))27/03/2012, 11:54Heavy flavoursThe inclusive photoproduction of D* mesons and of D*-tagged dijets is investigated with the H1 detector at the $ep$ collider HERA. The kinematic region covers small photon virtualities $Q^{2} < 2\ {\rm GeV}^2$ and photon-proton centre-of-mass energies of $100 < W_{\gamma p} < 285\ {\rm GeV}$. Inclusive \dstar\ meson differential cross sections are measured for central rapidities $|\eta(D*)| <...Go to contribution page
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Irakli Garishvili (Lawrence Livermore Nat. Laboratory (US))27/03/2012, 12:12Heavy flavoursHeavy flavor quarks are produced in the early stages of heavy ion collisions and serve as an important probe of the strongly interacting deconfined medium believed to be produced in these collisions at RHIC. Measuring observables such as Nuclear Modification Factor and Elliptic Flow for open heavy flavor production can help in quantifying medium effects. Measurement of heavy flavor...Go to contribution page
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Ganna Dolinska (Kiev University)27/03/2012, 14:00Heavy flavoursThe production of D*, D+, D0, Ds and Lambda_c charm hadrons and their antiparticles in ep scattering at HERA was studied with the ZEUS detector using the full HERA II data set. The measurement has been performed in the photoproduction regime. The fractions of c quarks hadronising as a particular charm hadron, f(c -> D, Lambda_c), were derived in the visible kinematic range. The obtained...Go to contribution page
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Alexander Mitov (CERN)27/03/2012, 14:18Heavy flavoursThe current state of the art in top-pair production is based on threshold resummation on top of the exact NLO result. We will examine the role - and the limitations - of the soft-gluon approximation in describing precision top-pair production at hadron colliders. We will demonstrate that the only way to substantially improve our knowledge of this observable is through fixed order calculation...Go to contribution page
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Nikolaos Kidonakis (Kennesaw State University)27/03/2012, 14:36Heavy flavoursI present theoretical results at approximate NNLO for top quark production at the LHC at 7 and 8 TeV energy. Total cross sections are shown for ttbar production and single top production in the t and s channels and via associated tW production.Top quark transverse momentum and rapidity distributions are also presented.Go to contribution page
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Kate Shaw (Abdus Salam Int. Cent. Theor. Phys. (IT))27/03/2012, 14:54Heavy flavoursWe present measurements of the production of top quarks in proton-proton collisions at 7 TeV with the ATLAS detector at the Large Hadron Collider. The cross section of pair-produced top quarks is measured in several channels, including the single lepton, dilepton and all hadronic channel, some using information from b-tagging.Go to contribution page
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Antonio Tropiano (Universita e INFN (IT))27/03/2012, 15:12Heavy flavoursWe present precise measurements of the top quark pair production cross section at 7 TeV, performed using CMS data collected in 2010-2011. The total cross section is measured in the lepton+jets, dilepton and fully hadronic channels, including the tau-dilepton and tau+jets modes. The results are combined and confronted with precise theory calculations. We also obtain an indirect constraint...Go to contribution page
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Karel Soustruznik (C)27/03/2012, 15:30Heavy flavoursWe present measurements of the cross sections for the production of top-antitop quark pair production via the strong interaction and for the production of single top quarks via the weak interaction in proton-antiproton collisions at sqrt(s)=1.96 TeV using data corresponding to integrated luminosities of up to 5.4 fb-1. The data were collected with the D0 detector at the Fermilab Tevatron...Go to contribution page
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Konstantinos Vellidis (University of Athens (GR))27/03/2012, 15:48Heavy flavoursThe study of the dynamics of top-quark pair production in proton-proton and proton-antiproton collisions plays an important role in the understanding of parton interactions at large Bjorken-x. It tests the assumptions of the standard model and of quantum chromodynamics at the electroweak scale and beyond. The CDF data set is an ideal sample for measuring observables sensitive to the...Go to contribution page
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Christian Andreas Jung (TU Dortmund), Christian Andreas Jung (Technische Universitaet Dortmund (DE))27/03/2012, 16:30Heavy flavoursWe present a measurement of the top-quark mass in proton-proton collisions at 7 TeV with the ATLAS detector at the Large Hadron Collider. The top mass is determined by making use of a two-dimensional template method in the single lepton channel. An indirect extraction of the top-quark mass from the measurement of the cross-section is also presented.Go to contribution page
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Tim Head (The University of Manchester), Timothy Head (University of Manchester)27/03/2012, 16:48Heavy flavoursMerged abstract: "Measurement of the top quark mass at D0" "Measurements of top quark properties at D0"Go to contribution page
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Minoru Hirose (Osaka University (JP)), Minoru Hirose (Osaka University)27/03/2012, 17:06Heavy flavoursMerged abstract: "Top quark properties" "Top quark pair properties"Go to contribution page
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Sven-Olaf Moch (Unknown)27/03/2012, 17:24Heavy flavoursWe discuss heavy-flavor production in association with one jet hadronic collisions matched to parton shower Monte Carlo programs at next-to-leading order QCD with account of top-quark decays and spin correlations in the decay products. The calculation builds on existing results for the radiative corrections to heavy-quark plus one jet production and uses the POWHEG BOX for the interface to...Go to contribution page
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Adam Kardos (University of Debrecen)27/03/2012, 17:42Heavy flavoursAiming at better understanding of the properties of top quarks, we focus on top--antitop+X production at the LHC, with X being a vector, or scalar/pseudoscalar boson. We show predictions obtained by PowHel, a computing framework based upon the POWHEG-BOX program with input obtained from HELAC-NLO. The POWHEG-BOX generates event files according to the Les-Houches accord, and uses the POWHEG...Go to contribution page
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Susan Cheatham (McGill University (CA))28/03/2012, 11:30Heavy flavoursThe production of Quarkonium is an important testing ground for QCD calculations. The J/ psi and Upsilon production cross-sections are measured in proton-proton collisions at the ATLAS detector. Differential cross sections as a function of transverse momentum and pseudorapidity will be presented. The fraction of J/\psi produced in $B$-hadron decays are also measured and the differential...Go to contribution page
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Daniele Fasanella (Universita e INFN (IT)), Daniele Fasanella (INFN)28/03/2012, 11:48Heavy flavoursAbstract missingGo to contribution page
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Prof. Bernd Kniehl (Univ. Hamburg)28/03/2012, 13:30Heavy flavoursWe study the polarization observables of $J/\psi$ hadroproduction at NLO in NRQCD, including the $^3\!P_J^{[8]}$ channel. Exploiting the color-octet long-distance matrix elements previously extracted through a global fit to unpolarized $J/\psi$ production data, we provide theoretical predictions in the helicity and Collins-Soper frames and compare them with data from CDF and ALICE. The...Go to contribution page
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Ionut Cristian Arsene (GSI - Helmholtzzentrum fur Schwerionenforschung GmbH (DE))28/03/2012, 13:48Heavy flavoursDue to their large mass, heavy quark pairs are considered to be produced in the first instants of the collision in hard scatterings of partons which can be described perturbatively. However, the bound states of these pairs are produced via soft non-perturbative processes. The interplay between the perturbative and non-perturbative processes involved in quarkonium production makes this...Go to contribution page
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Mr Akihisa Takahara (CNS, University of Tokyo and JRA RIKEN)28/03/2012, 14:06Heavy flavoursTitle:J/psi Photoproduction in ultra-peripheral Au+Au collisions measured by RHIC-PHENIX. Ultra-peripheral collisions are heavy-ion collisions with impact parameter larger than twice the nuclear radius. Since there is no nuclear overlap, strong interactions cannot occur and ions interact through photon-ion (coherent), photon-nucleus (incoherent), and photon photon...Go to contribution page
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Manuel Kambeitz28/03/2012, 14:24Heavy flavoursWe report recent studies on heavy flavor production in 1.96 TeV proton-antiproton collisions collected by the CDF detector. These include a new measurement of the spin-alignment of Y mesons using dimuon decays in 6.7 fb^-1 of data. This measurement is the first to report the full angular distributions of dimuons as functions of Y transverse momentum in both the CollinsโSoper and sโchannel...Go to contribution page
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Giovanni Sabatino (Universita degli Studi di Roma Tor Vergata (IT))28/03/2012, 14:42Heavy flavoursStudies of quarkonia production in the forward region provide important tests of NRQCD. During 2010 and 2011 the LHCb experiment has collected a dataset corresponding to an integrated luminosity of 1 fb-1 in proton-proton collisions at sqrt(s)= 7 TeV. We present studies based on 40 to 1000 fb-1 of data, including the production of the J/psi, psi(2S), Chi_c charmonium together with Upsilon...Go to contribution page
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Jolanta Brodzicka (INP Krakow)28/03/2012, 15:00Heavy flavoursWe present recent results on charmonium and charmonium-like states studied by the Belle experiment at the KEK-B e+e- collider. After years of interesting discoveries in the field of hadron spectroscopy, Belle continues the research by measuring new final states produced in various processes accessible at the B-Factories. Main motivation is to complete the spectrum of charmonia...Go to contribution page
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Elisa Fioravanti (INFN Ferrara)28/03/2012, 15:18Heavy flavoursCharmonium and charmonium-like states are a unique system for studying QCD and possibly exotic bound states. We present new results on such states, which are created in two-photon fusion or in electron-positron collisions and decaying into a variety of final states, including psi pi pi, eta_c pi pi, and J/psi omega.Go to contribution page
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Umberto Tamponi (Torino)28/03/2012, 16:00Heavy flavoursThe Belle collaboration recently reported the discovery of the p-wave Bottomonium singlets, hb(1P) and hb(2P), the surprising observation of resonant substructure in Y(5S) --> pi+pi-Y(nS), hb(mP) (n=1-3, m=1,2), and the first observation of the radiative transition hb(1P) --> gamma etab(1S) in 121.4 1/fb of data collected near the Upsilon(5S) resonance at the KEKB asymmetric-energy e^+e^-...Go to contribution page
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Claus Buszello (Uppsala University (SE)), Claus Buszello (Department of Physics and Astronomy-University of Uppsala), Claus Buszello (Uppsala University)28/03/2012, 16:18Heavy flavoursUsing the 1.3 fb$^{-1}$ sample of D0 RunII data taken between 2002 and 2006, we observe a new state decaying into $\Upsilon(1S) + \gamma$, where the $\Upsilon(1S)$ is detected by its decay into an oppositely charged muon pair, and the photon is reconstructed by its conversion into an electron-positron pair. The significance of this structure is six standard deviations and its mass is...Go to contribution page
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Dr Zhenwei Yang (Tsinghua University (CN))28/03/2012, 16:36Heavy flavoursDuring the year 2011, the LHCb experiment has accumulated 1 fb-1 of data in proton-proton collisions data at 7 TeV, collecting a sample rich in both Bc mesons and b baryons. Studies of these states provide a wealth of new measurements as well as probes of QCD theory predictions. We will present studies of Bc production together with precision measurements of both the mass and lifetime, in...Go to contribution page
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Enrique Camacho Perez (Centro Invest. Estudios Avanz. IPN (MX))28/03/2012, 16:54Heavy flavoursMerged abstract: "Analysis of the decay $B_s^0 \rightarrow J/\psi K^+ K^-$ $M(K^+K^-)>1.35$~GeV" "Measurement of the $\Lambda_b$ lifetime in the $\Lambda_b \to J/\psi \Lambda$ exclusive decay channel using the full D0 dataset"Go to contribution page
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Marcus Ebert (SLAC)28/03/2012, 17:12Heavy flavoursDecays of B mesons into final states containing baryons are much less understood than decays into mesons, and are useful for shedding light on baryon-production mechanisms and intermediate states. We report the results of recent and new studies of such decays, including B- -->Sigma_c++ pbar pi- pi-, B0bar -->Lambda_c+ pbar p pbar, and B --> D(*) p pbar (npi). Both the total decay rates and...Go to contribution page
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