Charm hadron production in relativistic heavy ion collisions within a quark combination model

Abstract

We investigate the charm hadron production in relativistic heavy-ion collisions with the quark combination model. The $p_T$ dependencies of the charm baryon to meson ratios such as $\frac{{\Lambda }_c+{\bar{\Lambda }}_c}{D^0+{\bar{D}}^0}$, $\frac{{\Lambda }_c+{\bar{\Lambda }}_c}{D^{+}+D^{-}}$ and $\frac{{\Lambda }_c+{\bar{\Lambda }}_c}{D_s^{+}+D_s^{-}}$ in Au+Au collisions at 200 GeV are obtained. The charm baryon enhancement in the intermediate $p_T$ range is very prominent, which further, together with the strangeness enhancement, affect the charm hadron ratios and lead to a $\sim 17$ larger charm cross-section given by PHENIX. The dependencies of the charm hadron ratios on energy, centrality, and other parameters are also investigated. Predictions of the charm hadron ratios for the upgrade of RHIC and for LHC are presented.

8 pages, 3 figures, 3 tables, revtex4, published version, title changed

References in corpus (10)

• Energy Loss and Flow of Heavy Quarks in Au+Au Collisions at sqrt(s_NN) = 200 GeV
• J/psi Production vs Centrality, Transverse Momentum, and Rapidity in Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Partonic flow and $\varphi$-meson production in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV
• Statistical hadronization of heavy quarks in ultra-relativistic nucleus-nucleus collisions
• Strangeness production from SPS to LHC
• Λ_{c} enhancement from strongly coupled quark-gluon plasma
• Thermal Charm Production in Quark-Gluon Plasma at LHC
• Charged-particle rapidity density in Au+Au collisions in a quark combination model
• Predictions for the LHC: an Overview
• Heavy Quark Production from Jet Conversions in a Quark-Gluon Plasma

Cited by in corpus (1)

• Hadron production by quark combination in central Pb+Pb collisions at $\sqrt{s_{NN}}=17.3$ GeV