Elliptic Flow in Au+Au Collisions at sNN=130GeV

K. H. Ackermann et al. (STAR Collaboration)
Phys. Rev. Lett. 86, 402 – Published 15 January 2001
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Abstract

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 sNN=130GeV using the STAR Time Projection Chamber at the Relativistic Heavy Ion Collider. The elliptic flow signal, v2, 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.

  • Received 13 September 2000

DOI:https://doi.org/10.1103/PhysRevLett.86.402

©2001 American Physical Society

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Vol. 86, Iss. 3 — 15 January 2001

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