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Title: Energy dependence of K / π fluctuations in relativistic heavy-ion collisions

Journal Article · · Physical Review C, Nuclear Physics
 [1];  [2]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. Univ. of Frankfurt (Germany)

In this paper, we will discuss the energy dependence of particle ratio fluctuations in heavy-ion collisions. Additionally, we study how the inherent multiplicity dependence of ratio fluctuations is reflected in the excitation function of the dynamical fluctuations. Specifically, we will show that the observed excitation function of dynamical K/π fluctuations is consistent with the expected dependence on the number of accepted pions and kaons in both the STAR and the NA49 experiments.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26); USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1530203
Journal Information:
Physical Review C, Nuclear Physics, Journal Name: Physical Review C, Nuclear Physics Journal Issue: 3 Vol. 81; ISSN 0556-2813; ISSN PRVCAN
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

References (22)

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Energy dependence of fluctuations in central Pb+Pb collisions from NA49 at the CERN SPS journal September 2008
Event-by-event fluctuations in mean p T and mean e T in s NN = 130   GeV Au+Au collisions journal August 2002
Energy dependence of pion and kaon production in central Pb+Pb collisions journal November 2002
Net charge fluctuations in Au + Au collisions at s N N = 130 GeV journal October 2003
Electric charge fluctuations in central Pb + Pb collisions at 20 A , 30 A , 40 A , 80 A , and 158 A GeV journal December 2004
Event-wise 〈 p t 〉 fluctuations in Au-Au collisions at s NN = 130 GeV journal June 2005
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Pion and kaon production in central Pb + Pb collisions at 20 A and 30 A GeV: Evidence for the onset of deconfinement journal February 2008
Beam-energy and system-size dependence of dynamical net charge fluctuations journal February 2009
Fluctuations of the K / π ratio in nucleus-nucleus collisions: Statistical and transport models journal February 2009
Systematic measurements of identified particle spectra in pp , d + Au , and Au + Au collisions at the STAR detector journal March 2009
Energy dependence of particle ratio fluctuations in central Pb + Pb collisions from s NN = 6 . 3 to 17.3 GeV journal April 2009
Event-by-event fluctuations in heavy ion collisions and the QCD critical point journal November 1999
K / π Fluctuations at Relativistic Energies journal August 2009
Fluctuations of Particle Ratios and the Abundance of Hadronic Resonances journal December 1999
Event-by-Event Fluctuations of the Kaon-to-Pion Ratio in Central P b + P b Collisions at 158 GeV per Nucleon journal March 2001
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Measurement of Nonrandom Event-by-Event Fluctuations of Average Transverse Momentum in s N N = 200     G e V A u + A u and p + p Collisions journal August 2004
A Statistical Model Analysis of k/π Fluctuations in Heavy ion Collisions journal August 2007

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