K/ pi Fluctuations at Relativistic Energies

K/ pi Fluctuations at Relativistic Energies

We report K/π fluctuations from Au+Au collisions at √[s[subscript NN]]=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 Sup...

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Bibliographic Details
Main Authors: Sakuma, Tai, Leight, William Axel, Kocoloski, Adam Philip, Jones, Christopher LaDon, Corliss, Ross Cameron, Betancourt, Michael Joseph, Balewski, Jan T., Surrow, Bernd, Walker, Matthew H, Redwine, Robert P, Milner, Richard G, Hoffman, Alan Michael
Other Authors: Massachusetts Institute of Technology. Department of Physics
Format: Article
Language:en_US
Published: American Physical Society 2010
Online Access:http://hdl.handle.net/1721.1/51854
https://orcid.org/0000-0002-5515-4563
https://orcid.org/0000-0001-5839-707X
https://orcid.org/0000-0002-0031-1963
https://orcid.org/0000-0002-9107-6312
Description
Summary:We report K/π fluctuations from Au+Au collisions at √[s[subscript NN]]=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 √[s[subscript NN]=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.

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