Enhanced production of $\psi (2S)$ mesons in heavy ion collisions

Abstract

We study the production of a $\psi (2S)$ meson in heavy ion collisions. We evaluate Wigner functions for the $\psi (2S)$ meson using both Gaussian and Coulomb wave functions, and investigate the wave function dependence in the $\psi (2S)$ meson production by recombination of charm and anti-charm quarks. The enhanced transverse momentum distribution of $\psi (2S)$ mesons compared to that of $J/\psi$ mesons, originated from wave function distributions of the $\psi (2S)$ and $J/\psi$ meson in momentum space, provides a plausible explanation for the recent measurement of the nuclear modification factor ratio between the $\psi (2S)$ and $J/\psi$ meson.

arXiv comment5 pages, 1 figure

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Cited by in corpus (6)

• Exotic Hadrons from Heavy Ion Collisions
• Hadronic effects on the $cc\bar{q}\bar{q}$ tetraquark state in relativistic heavy ion collisions
• Heavy quarkonium photoproduction in ultrarelativistic heavy ion collisions
• Production of multi-charmed hadrons by recombination in heavy ion collisions
• Elliptic flow as a probe for $\psi (2S)$ production mechanism in relativistic heavy ion collisions
• Angular Momentum Eigenstates of the Isotropic 3-D Harmonic Oscillator: Phase-Space Distributions and Coalescence Probabilities