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

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

2000-09-12

arxiv.org/abs/nucl-ex/0009011v1

Phys.Rev.Lett.86:402-407,2001

Physics

Nuclear Physics

Nuclear Experiment

5 pages, including 4 figures

Scientific paper

10.1103/PhysRevLett.86.402

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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