# 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.
docType_s :
Preprints, Working Papers, ...
6 pages and 4 figures, for STAR Collaboration, submitted to PRL. 2008
Domain :

http://hal.in2p3.fr/in2p3-00277374
Contributor : Dominique Girod <>
Submitted on : Tuesday, May 6, 2008 - 11:00:31 AM
Last modification on : Tuesday, May 13, 2008 - 2:00:58 PM

### Identifiers

• 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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