Scaling Properties of Hyperon Production in Au+Au Collisions at √sNN=200  GeV

Adams, J. and Planinić, Mirko and Poljak, Nikola and Zuo, J. X. (STAR Collaboration) (2007) Scaling Properties of Hyperon Production in Au+Au Collisions at √sNN=200  GeV. Physical Review Letters, 98 (6). pp. 62301-6. ISSN 0031-9007

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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 γ_s 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.

Item Type: Article
Date: February 2007
Subjects: NATURAL SCIENCES > Physics
Additional Information: Copyright (2007) by the American Physical Society.
Divisions: Faculty of Science > Department of Physics
Publisher: American Physical Society
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 01 Jul 2014 11:08
Last Modified: 01 Jul 2014 11:08

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