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Scaling properties of hyperon production in Au+Au collisions at $\sqrt{s_{NN}}$=200 GeV (2007)

Abstract
We present the scaling properties of Lambda, Xi, and Omega in midrapidity Au+Au collisions at the Brookhaven National Laboratory Relativistic Heavy Ion Collider at root s(NN)=200 GeV. The yield of multistrange baryons per participant nucleon increases from peripheral to central collisions more rapidly than that of Lambda, indicating an increase of the strange-quark density of the matter produced. The strange phase-space occupancy factor gamma(s) approaches unity for the most central collisions. Moreover, the nuclear modification factors of p, Lambda, and Xi are consistent with each other for 2 < p(T) < 5 GeV/c in agreement with a scenario of hadron formation from constituent quark degrees of freedom

Publication details
Download http://hal.in2p3.fr/in2p3-00136054/en/
Publisher HAL - CCSd - CNRS
Contributors Yvette Heyd
Repository CCSd/HAL : e-articles server (based on gBUS) (France)
Keywords Physics/Nuclear Experiment
Type ART_ACL
Coverage SYSTEM-SIZE DEPENDENCE; PB-PB COLLISIONS; HADRON-PRODUCTION; STRANGENESS ENHANCEMENT; AU COLLISIONS; RAPIDITY