The elliptic flow of heavy quarkonia in pA collisions from the initial state.

5 Nov 2019, 10:20
20m
Ball Room 3 (Wanda Reign Wuhan Hotel)

Ball Room 3

Wanda Reign Wuhan Hotel

Oral Presentation Small systems Parallel Session - Small systems I

Speaker

Dr Cheng Zhang (Key Laboratory of Quark and Lepton Physics (MOE) and Institute of Particle Physics, Central China Normal University & Key Laboratory of Particle Physics and Particle Irradiation (MOE), Institute of frontier and interdisciplinary science, Shandong University)

Description

The particular azimuthal angular correlation between a heavy meson and a light hadron has first been measured at the LHC recently. In this two particle correlation method, the experimental results show that the elliptic flows for heavy-flavor mesons (J/psi and D^0) are almost as large as those for light hadrons. We investigate the angular correlation between a heavy quarkonium and a charged light hadron in the Color Glass Condensate framework, which indicates that the heavy quarkonium v_2 can be naturally interpreted as an initial state effect. We also predict that the heavy quarkonium Upsilon should have a similar elliptic flow as compared to that of the J/psi, which can be tested in future measurements.

Primary authors

Dr Cheng Zhang (Key Laboratory of Quark and Lepton Physics (MOE) and Institute of Particle Physics, Central China Normal University & Key Laboratory of Particle Physics and Particle Irradiation (MOE), Institute of frontier and interdisciplinary science, Shandong University) Prof. Cyrille Marquet (CPHT, Ecole Polytechnique, CNRS, Universit´e Paris-Saclay) Prof. Guang-you Qin (Key Laboratory of Quark and Lepton Physics (MOE) and Institute of Particle Physics, Central China Normal University) Dr Shu-yi Wei (Key Laboratory of Quark and Lepton Physics (MOE) and Institute of Particle Physics, Central China Normal University) Prof. Bo-wen Xiao (Key Laboratory of Quark and Lepton Physics (MOE) and Institute of Particle Physics, Central China Normal University & CPHT, Ecole Polytechnique, CNRS, Universit´e Paris-Saclay)

Presentation Materials