Enhanced strange baryon production in Au+Au collisions compared to p+p at √sNN=200 GeV

Abelev, B. I. and Planinić, Mirko and Poljak, Nikola and Zuo, J. X. (STAR Collaboration) (2008) Enhanced strange baryon production in Au+Au collisions compared to p+p at √sNN=200 GeV. Physical Review C, 77 (4). pp. 44908-7. ISSN 0556-2813

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We report on the observed differences in production rates of strange and multistrange baryons in Au+Au collisions at √sNN=200 GeV compared to p+p interactions at the same energy. The strange baryon yields in Au+Au collisions, when scaled down by the number of participating nucleons, are enhanced relative to those measured in p+p reactions. The enhancement observed increases with the strangeness content of the baryon, and it increases for all strange baryons with collision centrality. The enhancement is qualitatively similar to that observed at the lower collision energy √sNN=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 p+p yields.

Item Type: Article
Keywords: p p, colliding beams nucleus nucleus, colliding beams scattering, heavy ion gold hyperon, hadroproduction hyperon, hadronic decay hyperon, yield Lambda Xi- Omega- yield, enhancement impact parameter, dependence transverse momentum, spectra nuclear matter, effect magnetic detector, STAR experimental results Brookhaven RHIC Coll 200 GeV-cms/nucleon
Date: April 2008
Subjects: NATURAL SCIENCES > Physics
Additional Information: Copyright (2008) by the American Physical Society.
Divisions: Faculty of Science > Department of Physics
Project code: 119-0982887-1006
Publisher: American Physical Society
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 01 Jul 2014 10:57
Last Modified: 01 Jul 2014 10:57
URI: http://digre.pmf.unizg.hr/id/eprint/2345

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