# K/$\pi$ Fluctuations at Relativistic Energies

Abstract : We report K/$\pi$ fluctuations from Au+Au collisions at $\sqrt{S_{NN}}$=19.6, 62.4, 130, and 200 GeV using the STAR detector at the Relativistic Heavy Ion Collider. K/$\pi$ 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 $\sqrt{S_{NN}}$=12.3 and 17.3 GeV. We report results for the collision centrality dependence of K/$\pi$ fluctuations and results for charge-separated fluctuations. We observe that the K/$\pi$ fluctuations scale with the charged particle multiplicity density
Document type :
Journal articles

http://hal.in2p3.fr/in2p3-00413042
Contributor : Yvette Heyd <>
Submitted on : Thursday, September 3, 2009 - 10:10:00 AM
Last modification on : Friday, November 27, 2020 - 10:46:03 PM

### Citation

B. I. Abelev, M. M. Aggarwal, Z. Ahammed, B. D. Anderson, D. Arkhipkin, et al.. K/$\pi$ Fluctuations at Relativistic Energies. Physical Review Letters, American Physical Society, 2009, 103, pp.092301-6. ⟨10.1103/PhysRevLett.103.092301⟩. ⟨in2p3-00413042⟩

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