Strangeness Enhancement in Cu-Cu and Au-Au Collisions at √sNN=200  GeV

Agakishiev, G. and Planinić, Mirko and Poljak, Nikola and Zoulkarneeva, Y. (STAR Collaboration) (2012) Strangeness Enhancement in Cu-Cu and Au-Au Collisions at √sNN=200  GeV. Physical Review Letters, 108 (7). pp. 72301-6. ISSN 0031-9007

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We report new STAR measurements of midrapidity yields for the Λ, Λ̅ , KS0, Ξ-, Ξ̅ +, Ω-, Ω̅ + particles in Cu+Cu collisions at √sNN=200  GeV, and midrapidity yields for the Λ, Λ̅ , KS0 particles in Au+Au at √sNN=200  GeV. We show that, at a given number of participating nucleons, the production of strange hadrons is higher in Cu+Cu collisions than in Au+Au collisions at the same center-of- mass energy. We find that aspects of the enhancement factors for all particles can be described by a parametrization based on the fraction of participants that undergo multiple collisions.

Item Type: Article
Keywords: stangeness, collisions, STAR, energy, enhancement
Date: February 2012
Subjects: NATURAL SCIENCES > Physics
Additional Information: Copyright (2012) 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: 05 Jun 2014 11:20
Last Modified: 23 Feb 2016 16:12

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