Strangeness in Quark Matter 2016

Session

Quarkonia I

4

28 Jun 2016, 16:00

204 (Clark Kerr Campus)

Conveners

Quarkonia I: I

• Tamas Biro (KFKI RMKI)

104. Measurement of charmonium production in pp collisions with ALICE at the LHC

Hugo Denis Antonio Pereira Da Costa (CEA/IRFU,Centre d'etude de Saclay Gif-sur-Yvette (FR))

28/06/2016, 16:00

Contributed Talk

Charmonia (e.g. J/ψ and ψ(2S)) are mesons formed of a charm and anti-charm quark pair. In high-energy hadronic collisions such as those delivered by the LHC between 2010 and 2015, charmonium production results from the hard scattering of two gluons in a process which occurs very early in the collision and with a timescale ∼1/2mc=0.08 fm/c, followed by the hadronization of the charm quark pair...

32. Excess of $J/\psi$ yield at very low $p_{T}$ in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV and U+U at $\sqrt{s_{NN}}$ = 193 GeV with STAR

Wangmei Zha (USTC/BNL)

28/06/2016, 16:20

Contributed Talk

$J/\psi$ suppression in heavy-ion collisions due to color screening of quark and antiquark potential in the deconfined medium has been proposed as a signature of the QGP formation. Other mechanisms, such as the cold nuclear matter effects and charm quark recombination, are likely to contribute to the observed modification of $J/\psi$ production in heavy-ion collisions. Recently, a significant...

36. Charmonium production in pp and PbPb collisions with the CMS experiment

Songkyo Lee (Korea University (KR))

28/06/2016, 16:40

Contributed Talk

The Psi prime (Psi(2S)) meson yield in PbPb collisions is of particular interest when compared to the J/psi meson. A variety of effects modify the charmonium production in PbPb collisions with respect to pp collisions, including melting in the quark gluon plasma and statistical recombination, which can have a different impact on the J/psi and the Psi(2S) mesons. Using pp and PbPb data at...

89. Charmonium production in Pb-Pb collisions at $\sqrt(s_{NN})$= 2.76 and 5.02 TeV with ALICE

Biswarup Paul (Universita e INFN Torino (IT))

28/06/2016, 17:00

Contributed Talk

The production of charmonium states, as the $J/\psi$ and $\psi(2S)$, in heavy-
ion collisions, is an important probe to investigate the formation of a plasma
of quarks and gluons (QGP). In a hot and deconfined medium, quarkonium
production is, indeed, expected to be significantly modified, with respect to
the pp yields scaled by the number of binary nucleon-nucleon collisions, due
to a...

57. Sequential Regeneration of Charmonia in Heavy-Ion Collisions, Bottomonia $p_T$-Spectra and Elliptic Flow

Xiaojian Du (Texas A&M University)

28/06/2016, 17:20

Contributed Talk

We investigate quarkonia production at RHIC and LHC using transport model including both suppression and regeneration mechanisms. This transport model has been rather successful in describing and predicting existing data at SPS, RHIC and LHC. One of the key transport coefficients is the dissociation rate. We first improve the hadronic dissociation rate by including a larger set of unflavored...

8. Quarkonium measurements via the di-muon decay channel in p+p and Au+Au collisions with the STAR experiment

Takahito Todoroki (Brookhaven National Laboratory)

28/06/2016, 17:40

Contributed Talk

Heavy quarkonia are an essential probe in understanding the properties of the quark-gluon plasma (QGP) formed
in relativistic heavy-ion collisions. The suppression of $J/\psi$ in the medium due to color-screening has been proposed
as a direct signature of the QGP formation.
However, its production mechanism in p+p collisions have not been fully understood despite of decades of efforts,
which...