K/π Fluctuations at Relativistic Energies

Abelev, B. I. and Planinić, Mirko and Poljak, Nikola and Zuo, J. X. (STAR Collaboration) (2009) K/π Fluctuations at Relativistic Energies. Physical Review Letters, 103 (9). pp. 92301-6. ISSN 0031-9007

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We report K/π fluctuations from Au+Au collisions at √sNN=19.6, 62.4, 130, and 200 GeV using the STAR detector at the Relativistic Heavy Ion Collider. K/π fluctuations in central collisions show little dependence on incident energy and are on the same order as those from NA49 at the Super Proton Synchrotron in central Pb+Pb collisions at √sNN=12.3 and 17.3 GeV. We report results for the collision centrality dependence of K/π fluctuations and results for charge-separated fluctuations. We observe that the K/π fluctuations scale with the charged particle multiplicity density.

Item Type: Article
Keywords: fluctuation, scaling, multiplicity, density
Date: August 2009
Subjects: NATURAL SCIENCES > Physics
Additional Information: Copyright (2009) 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: 10 Jun 2014 10:40
Last Modified: 10 Jun 2014 11:52
URI: http://digre.pmf.unizg.hr/id/eprint/2329

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