Scaling Properties of Hyperon Production in Au+Au Collisions at √sNN =200 GeV (CROSBI ID 210358)
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Podaci o odgovornosti
Adams, J. ; ... ; Planinić, Mirko ; ... ; Poljak, Nikola ; ... ; Zuo, J.X.
engleski
Scaling Properties of Hyperon Production in Au+Au Collisions at √sNN =200 GeV
We present the scaling properties of Λ, Ξ, and Ω in midrapidity Au+Au collisions at the Brookhaven National Laboratory Relativistic Heavy Ion Collider at sNN‾‾‾‾√=200 GeV. The yield of multistrange baryons per participant nucleon increases from peripheral to central collisions more rapidly than that of Λ, indicating an increase of the strange-quark density of the matter produced. The strange phase- space occupancy factor γs approaches unity for the most central collisions. Moreover, the nuclear modification factors of p, Λ, and Ξ are consistent with each other for 2<pT<5 GeV/c in agreement with a scenario of hadron formation from constituent quark degrees of freedom.
scaling; hyperon; STAR
STAR Collaboration.
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