Enhanced strange baryon production in Au + Au collisions compared to p + p at s(NN)**(1/2) = 200-GeV - INSPIRE

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Enhanced strange baryon production in Au + Au collisions compared to p + p at s(NN)**(1/2) = 200-GeV

STAR

Collaboration

May, 2007

6 pages

Published in:

Phys.Rev.C 77 (2008) 044908

e-Print:

0705.2511 [nucl-ex]

DOI:

10.1103/PhysRevC.77.044908

Experiments:

BNL-RHIC-STAR

View in:

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Abstract: (arXiv)

We report on the observed differences in production rates of strange and multi-strange baryons in Au+Au collisions at sqrts = 200 GeV compared to pp interactions at the same energy. The strange baryon yields in Au+Au collisions, then scaled down by the number of participating nucleons, are enhanced relative to those measured in pp reactions. The enhancement observed increases with the strangeness content of the baryon, and increases for all strange baryons with collision centrality. The enhancement is qualitatively similar to that observed at lower collision energy sqrts =17.3 GeV. The previous observations are for the bulk production, while at intermediate pT, 1 < pT< 4 GeV/c, the strange baryons even exceed binary scaling from pp yields.

Note:

7 pages, 4 figures. Printed in PRC

25.75.Nq
12.40.Ee
25.75.Dw
p p: colliding beams
nucleus nucleus: colliding beams
scattering: heavy ion
gold
hyperon: hadroproduction
hyperon: hadronic decay
hyperon: yield

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