Elliptic flow as a probe for $\psi (2S)$ production mechanism in relativistic heavy ion collisions

Abstract

I discuss the elliptic flows of $\psi (2S)$ with different production mechanisms in $\sqrt{s_{NN}}=2.76$ TeV Pb-Pb collisions. If the final $\psi (2S)$s are mainly from the recombination of uncorrelated charm and anticharm quarks at $T\approx T_c$, charm and anticharm quarks will carry large collective flows of the bulk medium, which will be inherited by the regenerated $\psi (2S)$s. This indicates a larger elliptic flow of $\psi (2S)$ than that of $J/\psi$ which can be regenerated at $T\ge T_c$, $v_2^{\psi (2S)}>v_2^{J/\psi }$. However, if the final $\psi (2S)$s are mainly from the transitions of $J/\psi \to \psi (2S)$ caused by the color screening of QGP, its elliptic flow should be close to the elliptic flow of $J/\psi$, $v_2^{\psi (2S)}\sim v_2^{J/\psi }$. Therefore, $\psi (2S)$ elliptic flow is a sensitive probe for its production mechanisms in relativistic heavy ion collisions.

6 pages, 4 figures. (implements of Wigner function for regeneration, and other discussions.)

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Cited by in corpus (9)

• Approach to equilibrium of quarkonium in quark-gluon plasma
• Bottomonium Continuous Production from Unequilibrium Bottom Quarks in Ultrarelativistic Heavy Ion Collisions
• Thermal Production of Charmonia at the LHC Energies
• Measurements of the azimuthal anisotropy of prompt and nonprompt charmonia in PbPb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Anisotropic flow: A case for Bottomonia
• Non-thermal distributions of charm and charmonium in relativistic heavy-ion collisions
• Perspectives in Small Systems : Heavy Quarks and HBT Radii
• Theoretical Review of Charmonium Production with Different $p_T$ in the Hot Medium
• Anisotropic flows of charmonium in the relativistic heavy-ion collisions