Charmed hadron production at low transverse momentum in Au+Au collisions at RHIC

Abstract : We report measurements of charmed hadron production from hadronic ($D\to K\pi$) and semileptonic ($\mu$ and $e$) decays in 200 GeV Au+Au collisions at RHIC. Analysis of the spectra indicates that charmed hadrons have a different radial flow pattern from light or multi-strange hadrons. Charm cross sections at mid-rapidity are extracted by combining the three independent measurements, covering the transverse momentum range that contributes to $\sim$90% of the integrated cross section. The cross sections scale with number of binary collisions of the initial nucleons, a signature of charm production exclusively at the initial impact of colliding heavy ions. The implications for charm quark interaction and thermalization in the strongly interacting matter are discussed.
Type de document :
Pré-publication, Document de travail
6 pages and 4 figures, for STAR Collaboration, submitted to PRL. 2008

http://hal.in2p3.fr/in2p3-00277374
Contributeur : Dominique Girod <>
Soumis le : mardi 6 mai 2008 - 11:31:28
Dernière modification le : vendredi 23 février 2018 - 15:30:05

Identifiants

• HAL Id : in2p3-00277374, version 1
• ARXIV : 0805.0364

Citation

B.I. Abelev, M.M. Aggarwal, Z. Ahammed, B.D. Anderson, D. Arkhipkin, et al.. Charmed hadron production at low transverse momentum in Au+Au collisions at RHIC. 6 pages and 4 figures, for STAR Collaboration, submitted to PRL. 2008. 〈in2p3-00277374〉

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