Strangeness Enhancement in Cu-Cu and Au-Au Collisions at √sNN=200 GeV
Name
Agakishiev-2012-Strangeness Enhancement in Cu-Cu and Au-Au Collisions at √sNN
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297.77 KB
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Checksum (MD5)
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Author(s)
Balewski, Jan T.
Betancourt, Michael Joseph
Corliss, Ross
Hays-Wehle, James Prewitt
Leight, William Axel
Milner, Richard G.
Redwine, Robert P.
Seele, J.
Steadman, Stephen G.
Surrow, Bernd
Date Issued
February 2012
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Agakishiev, G., M. M. Aggarwal, Z. Ahammed, et al. Strangeness Enhancement in Cu-Cu and Au-Au Collisions at √sNN=200 GeV. Physical Review Letters 108(7), 2012. © 2012 American Physical Society
Version
Final published version
Abstract
We report new STAR measurements of midrapidity yields for the Λ, Λ̅ , K[subscript S][superscript 0], Ξ[superscript -], Ξ̅ [superscript +], Ω[superscript -], Ω̅ [superscript +] particles in Cu+Cu collisions at √s[subscript NN]=200 GeV, and midrapidity yields for the Λ, Λ̅ , K[subscript S][superscript 0] particles in Au+Au at √s[subscript NN]=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.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.108.072301
