Strangeness Enhancement in Cu-Cu and Au-Au Collisions at root s(NN)=200 GeV

0384970 - ÚJF 2013 RIV US eng J - Journal Article
Agakishiev, G. - Aggarwal, M. M. - Ahammed, Z. - Alakhverdyants, A. V. - Alekseev, I. - Alford, J. - Anderson, B. D. - Anson, C. - Arkhipkin, D. - Bielčík, J. - Bielčíková, Jana - Chaloupka, Petr - Chung, Paul - Hajková, O. - Kapitán, Jan - Kushpil, Vasilij - Pachr, M. - Rusnak, J. - Šumbera, Michal - Tlustý, David … Total 375 authors
Strangeness Enhancement in Cu-Cu and Au-Au Collisions at root s(NN)=200 GeV.
Physical Review Letters. Roč. 108, č. 6 (2012), 072301/1-072301/6. ISSN 0031-9007. E-ISSN 1079-7114
R&D Projects: GA MŠMT LA09013
Institutional support: RVO:61389005
Keywords : heavy ion collision
Subject RIV: BG - Nuclear, Atomic and Molecular Physics, Colliders
Impact factor: 7.943, year: 2012

We report new STAR measurements of midrapidity yields for the Lambda, (Lambda) over bar, K-S(0), Xi(-), (Xi) over bar (+), Omega(-), (Omega) over bar (+) particles in Cu + Cu collisions at root s(NN) = 200 GeV, and midrapidity yields for the Lambda, (Lambda) over bar, K-S(0) particles in Au + Au at root s(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.
Permanent Link: http://hdl.handle.net/11104/0216934