Latest documents http://publikationen.ub.uni-frankfurt.de/index/index/ Tue, 31 Oct 2006 09:40:57 +0100 Tue, 31 Oct 2006 09:40:57 +0100 http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/2172 We propose to measure azimuthal correlations of heavy-flavor hadrons to address the status of thermalization at the partonic stage of light quarks and gluons in high-energy nuclear collisions. In particular, we show that hadronic interactions at the late stage cannot significantly disturb the initial back-to-back azimuthal correlations of DDbar pairs. Thus, a decrease or the complete absence of these initial correlations does indicate frequent interactions of heavy-flavor quarks and also light partons in the partonic stage, which are essential for the early thermalization of light partons. Kai Oliver Schweda; Xianglei Zhu; Marcus Bleicher; Shengli Huang; Horst Stöcker; Nu Xu; Pengfei Zhuang preprint http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/2172 Tue, 31 Oct 2006 09:40:57 +0100 http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/2773 We propose to measure correlations of heavy-flavor hadrons to address the status of thermalization at the partonic stage of light quarks and gluons in high-energy nuclear collisions, shown on the example of azimuthal correlations of D-Dbar pairs. We show that hadronic interactions at the late stage can not disturb these correlations significantly. Thus, a decrease or the complete absence of these initial correlations indicates frequent interactions of heavy-flavor quarks in the partonic stage. Therefore, early thermalization of light quarks is likely to be reached. PACS numbers: 25.75.-q Xianglei Zhu; Marcus Bleicher; Shengli Huang; Kai Oliver Schweda; Horst Stöcker; Hermine K. Wöhri; Nu Xu; Pengfei Zhuang preprint http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/2773 Tue, 09 May 2006 15:59:18 +0200