Latest documents http://publikationen.stub.uni-frankfurt.de/index/index/ Thu, 29 Sep 2005 08:28:43 +0200 Thu, 29 Sep 2005 08:28:43 +0200 http://publikationen.stub.uni-frankfurt.de/frontdoor/index/index/docId/3801 Elliptic flow from nuclear collisions is a hadronic observable sensitive to the early stages of system evolution. We report first results on elliptic flow of charged particles at midrapidity in Au+Au collisions at sqrt(s_NN)=130 GeV using the STAR TPC at RHIC. The elliptic flow signal, v_2, averaged over transverse momentum, reaches values of about 6% for relatively peripheral collisions and decreases for the more central collisions. This can be interpreted as the observation of a higher degree of thermalization than at lower collision energies. Pseudorapidity and transverse momentum dependence of elliptic flow are also presented. K. H. Ackermann; STAR Collaboration preprint http://publikationen.stub.uni-frankfurt.de/frontdoor/index/index/docId/3801 Thu, 29 Sep 2005 08:28:43 +0200