Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2002-05-29
Phys.Rev.Lett.89:222301,2002
Physics
Nuclear Physics
Nuclear Experiment
5 pages, 4 figures, submitted to Physical Review Letters
Scientific paper
10.1103/PhysRevLett.89.222301
This paper describes the measurement of collective flow for charged particles in Au+Au collisions at sqrt{s_NN}} = 130 GeV using the PHOBOS detector at the Relativistic Heavy Ion Collider (RHIC). An azimuthal anisotropy is observed in the charged particle hit distribution in the PHOBOS multiplicity detector. This anisotropy is presented over a wide range of pseudorapidity (eta) for the first time at this energy. The size of the anisotropy (v_{2}) is thought to probe the degree of equilibration achieved in these collisions. The result here,averaged over momenta and particle species, is observed to reach 7% for peripheral collisions at mid-rapidity, falling off with centrality and increasing |eta|. Data are presented as a function of centrality for |eta|<1.0 and as a function of eta, averaged over centrality, in the angular region -5.0
Back Birger B.
PHOBOS Collaboration
No associations
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