Elliptic flow in Au+Au collisions at sqrt(s_NN) = 130 GeV

  • 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.

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Author:K. H. Ackermann, STAR Collaboration
ArXiv Id:http://arxiv.org/abs/nucl-ex/0009011
Document Type:Preprint
Date of Publication (online):2005/09/29
Year of first Publication:2000
Publishing Institution:Universit├Ątsbibliothek Johann Christian Senckenberg
Release Date:2005/09/29
Source:Phys.Rev.Lett. 86 (2001), http://arxiv.org/abs/nucl-ex/0009011
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoDeutsches Urheberrecht