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

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 \(\frac{\Lambda_{c}+\bar{\Lambda}_{c}}{D^{0}+\bar{D}^{0}}\), \(\frac{\Lambda_{c}+\bar{\Lambda}_{c}}{D^{+}+D^{-}}\)...

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Bibliographic Details
Published inarXiv.org
Main Authors Yao, Tao, Zhou, Wei, Qu-Bing Xie
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 06.01.2009
Subjects
Baryons
Charm (particle physics)
Heavy ions
Ionic collisions
Physics - Nuclear Theory
Quarks
Relativism
Relativistic effects
Strangeness
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Summary: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 \(\sim17%\) 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.
ISSN:2331-8422
DOI:10.48550/arxiv.0809.0049