9th Workshop of the APS Topical Group on Hadronic Physics

Session

Quarkonium Production from pp to AA

Apr 13, 2021, 3:30 PM

Conveners

Quarkonium Production from pp to AA

• Michael Strickland (Kent State University)

Description

co-host: Vincent Cheung

126. Recent quarkonia results from PHENIX experiment

Murad Sarsour (Georgia State University)

4/13/21, 3:30 PM

Oral Presentation

Quarkonia are among the most important tools for studying Quantum Chromodynamics (QCD) in high energy hadronic collisions. Despite decades of extensive studies, we still have a limited knowledge of their production mechanism and hadronization; and carrying out as many measurements as possible in $p$+$p$ collisions over a broad kinematic region at different energies is essential to understand...

134. Production and polarization of direct $J/\psi$ to ${\mathcal O}(\alpha_s^3)$ in the improved color evaporation model in collinear factorization

Vincent Cheung (University of California, Davis)

4/13/21, 3:50 PM

Oral Presentation

One of the best ways to understand hadronization in QCD is to study the production of quarkonium. The color evaporation model (CEM) and Nonrelativistic QCD (NRQCD) can describe production yields rather well but spin-related measurements like the polarization are stronger tests. In this talk, we will present the first calculation of quarkonium polarization in the improved color evaporation...

209. Chromoelectric Distribution Function of Nuclear Matter Probed by Quarkonium

Xiaojun Yao (MIT)

4/13/21, 4:10 PM

Oral Presentation

Quarkonium suppression in heavy ion collisions has been used as a probe of the quark-gluon plasma (QGP) for decades. The intuitive picture of sequential suppression based on the Debye screening of the heavy quark potential is obscured by other in-medium processes such as dissociation and recombination. A natural question to ask is what we can learn about the QGP from measurements of quarkonium...

198. Bottomonium suppression in an open quantum system using the quantum trajectories method

Dr Johannes Heinrich Weber (Humboldt University of Berlin)

4/13/21, 4:30 PM

Oral Presentation

We solve the Lindblad equation describing the Brownian motion of a Coulombic heavy quark-antiquark pair in a strongly coupled quark-gluon plasma using the highly efficient Monte Carlo wave-function method. The Lindblad equation has been derived in the framework of pNRQCD and fully accounts for the quantum and non-Abelian nature of the system. The hydrodynamics of the plasma is realistically...

252. Suppression and elliptic flow of bottomonia in heavy ion collisions at CMS

Jared Jay (University of California, Davis)

4/13/21, 4:50 PM

Oral Presentation

The nuclear modification factors $R_{AA}$ and $R_{pA}$ of $\Upsilon$ mesons, measured from PbPb, pPb, and pp collisions at $\sqrt{s_{NN}} = 5.02$ TeV at CMS, are reported. The second-order Fourier coefficients ($v_2$) characterizing the elliptic flow of $\Upsilon$'s in PbPb are also reported. In all cases, the $\Upsilon$'s are reconstructed through their dimuon decay channel, as measured at...