K/pi Fluctuations at Relativistic Energies

Lee Barnby; Marek Bombara; Peter Jones; John Nelson; TP Burton; Essam Elhalhuli; L Gaillard

doi:10.1103/PhysRevLett.103.092301

K/pi Fluctuations at Relativistic Energies

Lee Barnby, Marek Bombara, Peter Jones, John Nelson, TP Burton, Essam Elhalhuli, L Gaillard

Physics and Astronomy

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Abstract

We report K/pi fluctuations from Au+Au collisions at 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 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.

Original language	English
Journal	Physical Review Letters
Volume	103
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevLett.103.092301
Publication status	Published - 1 Aug 2009

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10.1103/PhysRevLett.103.092301

Ultra-relativitic Heavy Ion Collisions - Application for Bridging Support
Jones, P. (Principal Investigator)
SCIENCE & TECHNOLOGY FACILITIES COUNCIL
1/03/08 → 31/05/10
Project: Research Councils

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title = "K/pi Fluctuations at Relativistic Energies",

abstract = "We report K/pi fluctuations from Au+Au collisions at 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 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.",

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AU - Barnby, Lee

AU - Bombara, Marek

AU - Jones, Peter

AU - Nelson, John

AU - Burton, TP

AU - Elhalhuli, Essam

AU - Gaillard, L

PY - 2009/8/1

Y1 - 2009/8/1

N2 - We report K/pi fluctuations from Au+Au collisions at 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 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.

AB - We report K/pi fluctuations from Au+Au collisions at 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 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.

U2 - 10.1103/PhysRevLett.103.092301

DO - 10.1103/PhysRevLett.103.092301

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SN - 1079-7114

VL - 103

JO - Physical Review Letters

JF - Physical Review Letters

IS - 9

ER -

K/pi Fluctuations at Relativistic Energies

Abstract

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Ultra-relativitic Heavy Ion Collisions - Application for Bridging Support

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