195 articles – 1853 Notices  [english version]
 HAL : in2p3-00277374, version 1
 arXiv : 0805.0364
 Charmed hadron production at low transverse momentum in Au+Au collisions at RHIC
 STAR Collaboration(s)
 (2008)
 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.
 Thème(s) : Physique/Physique Nucléaire Expérimentale
 Lien vers le texte intégral : http://fr.arXiv.org/abs/0805.0364
 in2p3-00277374, version 1 http://hal.in2p3.fr/in2p3-00277374 oai:hal.in2p3.fr:in2p3-00277374 Contributeur : Dominique Girod <> Soumis le : Mardi 6 Mai 2008, 11:31:28 Dernière modification le : Mardi 13 Mai 2008, 14:58:21