Author:
Wen Liuyuan,Du Xiaojian,Shi Shuzhe,Chen Baoyi
Abstract
Abstract
Color screening and parton inelastic scattering modify the heavy-quark antiquark potential in mediums consisting of particles from quantum chromodynamics (QCD), leading to the suppression of quarkonium production in relativistic heavy-ion collisions. Owing to the small charm/anti-charm (
) pair production number in proton-nucleus (pA) collisions, the correlation between different
pairs is negligible, which makes the Schrödinger equation viable for tracking the evolution of only one
pair. We employ the time-dependent Schrödinger equation with an in-medium
potential to study the evolution of charmonium wave functions in a hydrodynamic-like QCD medium produced in pA collisions. We explore different parametrizations of real and imaginary parts of the
potential and calculate the nuclear modification factors (
) of
and
in
TeV energy p-Pb collisions at the Large Hadron Collider (LHC). Comparing strong and weak screening scenarios with experimental data in this approach, we arrive at the conclusion that color screening is weak at temperatures close to the deconfined phase transition. Moreover, the imaginary part of the potential is crucial in describing the experimental data, which is consistent with widely studied semi-classical approaches, where dissociation rates are essential.
Funder
Deutsche Forschungsgemeinschaft
National Natural Science Foundation of China
Office of Nuclear Energy
Subject
Astronomy and Astrophysics,Instrumentation,Nuclear and High Energy Physics
Cited by
6 articles.
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