Welcome Room: JungSeok Memorial Library

Quarkonium Transverse Momentum Distribution in High Energy Nuclear Collisions

• Peng Fei Zhuang

Room: JungSeok Memorial Library Abstract: The quarkonium transverse momentum distribution is more sensitive to the nature of the hot quantum chromodynamic matter created in high energy nuclear collisions compared with the yield. Taking a dynamic transport approach for quarkonium motion together with a hydrodynamic description for the medium evolution, the cancellation between the two hot nuclear matter effects, the dissociation and the regeneration, controls the quarkonium transverse momentum distribution. In particular, the second moment of the distribution can be used to differentiate between the hot mediums produced at SPS, RHIC and LHC energies.

Open-quantum systems view of Bottomonium suppression in the QGP

• Alexander Rothkopf

Room: JungSeok Memorial Library Abstract: Measuring the temperature of the quark-gluon plasma is a central task that calls for close collaboration between experiment and theory. Understanding e.g. the dynamics of hard probes as they traverse the bulk, promises such insight into the surrounding thermal medium. Here we report on recent progress in the description of the in-medium real-time evolution of Bottomonium states, based on a complex valued effective field theory potential, extracted from first principles lattice QCD. The concept of open-quantum systems, well known in condensed matter theory, allows us to intuitively understand the role of the imaginary part of this potential as it provides a clear connection to the thermal fluctuations of the surrounding heat bath.

Lattice NRQCD for Quarkonium at Non-zero Temperature

• Seyong Kim

Room: JungSeok Memorial Library Using lattice NRQCD method together with Bayesian reconstruction methods for the spectral function, we study in-medium modification of quarkonium due to thermal effect without assuming a potential between the heavy quarks.

CMS overview

• ByungSik Hong

Room: JungSeok Memorial Library

ALICE overview

• Silvia Masciocchi

Room: JungSeok Memorial Library

Quarkonium production in nuclear collisions from deconfined quarks

• Johanna Stachel

Room: JungSeok Memorial Library

Quarkonium and heavy mesons at CMS

• Mihee Jo

Room: JungSeok Memorial Library Abstract: The measurement of quarkonia can provide essential information of the QGP since they experience the medium from the early stage of the collisions. For instance, a sequential disassociation of different quarkonium states can indicate the temperature of the medium. Depending on the various bounding energy, the color-screening effect leads to a different levels of suppression of each quarkonium states. However, other contributions to the final production of quarkonia should be considered, such as the cold-nuclear-matter effect and recombination, in order to understand the properties of the QGP more precisely. Measurements of charmonium states, prompt J/psi and psi(2S), charm at heavy-ion collisions will be presented in this talk to discuss aforementioned phenomena. On the other hand, open heavy-flavors are very important probes to illustrate interactions between QGP and quarks and gluons more comprehensively. Partons in the QCD medium lose energy while they traverse the QGP by elastic collisions and gluon radiation. Gluon radiation is dominated for fast partons in medium and according to the dead-cone effect, energy loss by radiation of gluons are expected to be decreased for heavier quarks. In the other half of this talk, nuclear-modification-factor of open B meson measurements and non-prompt J/psi will be presented at pPb and PbPb collisions to check whether the flavor dependent suppression occurs.

Open heavy-flavor measurements with ALICE at the LHC

• Ralf Averveck

Room: JungSeok Memorial Library

Di-electron Measurements at RHIC

• Zhao Jie

Room: JungSeok Memorial Library

Review of Two Particle Correlations observed in Proton+Proton and Heavy Ion Collisions at CMS

• Yongsun kim

Room: JungSeok Memorial Library Abstract: The CMS collaboration has recorded 150 μb-1 and 35 nb-1 of PbPb and pPb collisions, at 2.76TeV and 5.02TeV, respectively. This presentation reports the results of the two particle correlation measurements. A particular emphasis is given to the results regarding to the long-range correlations called ridge which is observed in all of pp, pPb and PbPb collisions.

Future upgrade and physics perspective of the ALICE experiment

• Yvonne Pachmayer

Room: JungSeok Memorial Library

Chiral magnetic effects via instanton

• Seung-il Nam

Room: JungSeok Memorial Library Abstract: We investigate the chiral magnetic effect (CME) with the topological QCD object, i.e. instanton. The chiral susceptibility, which is the main source for CME, is interpreted as the number difference between the instant on and anti-instanton in their ensemble. A simple effective model is developed within the quark-instanton interaction picture at finite temperature in the presence of the strong external magnetic field. The numerical results again support CME observed in the heavy-ion collision experiments, and are in good agreement with the various lattice QCD simulation data.

Recent flow results at RHIC

• Hiroshi Masui

Room: JungSeok Memorial Library Abstract: I'm going to talk about recent results of flow measurements at RHIC from both PHENIX and STAR. I'm also going to discuss what have we learned from the current results, and what we are able to learn in future measurements at RHIC.

Recent Development in Hydro

• Tetsufumi Hirano

Room: JungSeok Memorial Library Abstract: Relativistic hydrodynamic models play an important role in the physics of high-energy heavy ion collisions to describe the space-time evolution of the quark gluon plasma (QGP). In this talk, I first show results from an integrated dynamical approach in which Monte-Carlo Glauber/KLN for the initial stage, relativistic hydrodynamics for the QGP stage and kinetic theory for the hadron gas stage are combined. In particular, I emphasize the importance of hadronic rescattering effects on transverse dynamics such as elliptic flow and HBT radii. After that, some recent developments in the relativistic hydrodynamic model are highlighted. These topics include medium response to jet propagation, anomalous hydrodynamics, causal hydrodynamic fluctuation and its application to the QGP expansion.

Azimuthal anisotropy of prompt J/psi in CMS

• Dongho Moon

Room: JungSeok Memorial Library Abstract: The mechanisms which charmonia production is modified in the high-density medium created in ultra-relativistic heavy-ion collisions, are still not quantitatively understood. In order to disentangle among different scenarios, a multi-dimensional analysis in a wide kinematic range is need. The azimuthal anisotropy of prompt J/psi in PbPb collisions at 2.76 TeV will be presented, using the 150 μb-1 of PbPb data recorded in 2011.

Anisotropic flow studies in ALICE

• Michael Weber (CERN)

Room: JungSeok Memorial Library I will present an overview of flow studies in ALICE.

Charmonium production in heavy ion collisions

• Sungtae Cho

Room: JungSeok Memorial Library Abstract : Starting from the discussion on issues related to charmed hadron production in heavy ion collisions, we investigate the effects of charmonium production by recombination of charm and anti-charm quarks on the nuclear modification factor of charmonium. We show that the production of charmonium through charm quark recombination plays an important role in understanding various aspects of charmonium production in heavy ion collisions.

Path-length study with Flow and RAA and Study of Flow fluctuation

• Myunggeun Song

Room: JungSeok Memorial Library

The Study about the modification of jet-like particle yield in Pb-Pb collisions at ALICE

• MinWoo Kim

Room: JungSeok Memorial Library

Nuclear modification factor of beauty electron in Pb-Pb collisions

• Martin Voelkl

Room: JungSeok Memorial Library

Nuclear modification factor of beauty electron in p-Pb collisions

• Minjung Kim (Inha University)

Room: JungSeok Memorial Library