2008/09/30 by Tao Yao, Wei Zhou, Qu-bing Xie +1 · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #nucl-th
paper · pdf · doi:10.1103/physrevc.78.064911
published as Phys.Rev.C78:064911,2008 · 8 pages, 3 figures, 3 tables, revtex4, published version, title changed
openalex publication_date 2008/12/31 · arxiv created 2009/01/06 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We investigate charm hadron production in relativistic heavy ion collisions with the quark combination model. The pT dependencies of the charm baryon-to-meson ratios such as \frac\ensuremathΛc+\ensuremathΛcD0+D0, \frac\ensuremathΛc+\ensuremathΛcD++D^\ensuremath-, and \frac\ensuremathΛc+\ensuremathΛcDs++Ds^\ensuremath- in Au+Au collisions at 200 GeV are obtained. The charm baryon enhancement in the intermediate pT range is very prominent, which, together with the strangeness enhancement, further affects the charm hadron ratios. The modified charm hadron ratios lead to a ~17% increase of the 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 the BNL Relativistic Heavy Ion Collider (RHIC) and the CERN Large Hadron Collider (LHC) are presented.