Analysis of Kaon fluctuations from the beam energy scan at RHIC

Claudia Ratti; Rene Bellwied; Jacquelyn Noronha-Hostler; Paolo Parotto; Israel Portillo Vazquez; Jamie M. Stafford

doi:10.1016/j.nuclphysa.2018.10.008

Analysis of Kaon fluctuations from the beam energy scan at RHIC

Claudia Ratti, Rene Bellwied, Jacquelyn Noronha-Hostler, Paolo Parotto, Israel Portillo Vazquez, Jamie M. Stafford

School of Arts and Sciences, New High Energy Theory Center

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

We analyze the recent STAR collaboration results on net-kaon fluctuations in the framework of the Hadron Resonance Gas (HRG) model. Our purpose is to extract the freeze-out temperature and chemical potential as functions of the collision energy. In our HRG model, we use the complete hadron spectrum from the latest PDG list. These results are compared to the freeze-out parameters obtained from a combined analysis of net-electric charge and net-proton fluctuations. At the highest collision energies, kaons need about 10-15 MeV higher freeze-out temperatures than the light hadrons. Predictions for moment ratios of the net-Lambda multiplicity distribution are obtained along the freeze-out lines. Lambda fluctuations are sensitive to the difference in the freeze-out temperatures observed in our analysis.

Original language	English (US)
Pages (from-to)	799-802
Number of pages	4
Journal	Nuclear Physics A
Volume	982
DOIs	https://doi.org/10.1016/j.nuclphysa.2018.10.008
State	Published - Feb 2019

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

Keywords

Heavy-ion collisions
QCD thermodynamics
Quark-gluon plasma

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10.1016/j.nuclphysa.2018.10.008

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title = "Analysis of Kaon fluctuations from the beam energy scan at RHIC",

abstract = "We analyze the recent STAR collaboration results on net-kaon fluctuations in the framework of the Hadron Resonance Gas (HRG) model. Our purpose is to extract the freeze-out temperature and chemical potential as functions of the collision energy. In our HRG model, we use the complete hadron spectrum from the latest PDG list. These results are compared to the freeze-out parameters obtained from a combined analysis of net-electric charge and net-proton fluctuations. At the highest collision energies, kaons need about 10-15 MeV higher freeze-out temperatures than the light hadrons. Predictions for moment ratios of the net-Lambda multiplicity distribution are obtained along the freeze-out lines. Lambda fluctuations are sensitive to the difference in the freeze-out temperatures observed in our analysis.",

keywords = "Heavy-ion collisions, QCD thermodynamics, Quark-gluon plasma",

author = "Claudia Ratti and Rene Bellwied and Jacquelyn Noronha-Hostler and Paolo Parotto and {Portillo Vazquez}, Israel and Stafford, {Jamie M.}",

note = "Funding Information: This material is based upon work supported by the National Science Foundation under grants no. PHY-1654219 and OAC-1531814 and by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics, within the framework of the Beam Energy Scan Theory (BEST) Topical Collaboration. We also acknowledge the support from the Center of Advanced Computing and Data Systems at the University of Houston. The work of R. B. is supported through DOE grant DEFG02-07ER41521. Publisher Copyright: {\textcopyright} 2018",

year = "2019",

month = feb,

doi = "10.1016/j.nuclphysa.2018.10.008",

language = "English (US)",

volume = "982",

pages = "799--802",

journal = "Nuclear Physics A",

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T1 - Analysis of Kaon fluctuations from the beam energy scan at RHIC

AU - Ratti, Claudia

AU - Bellwied, Rene

AU - Noronha-Hostler, Jacquelyn

AU - Parotto, Paolo

AU - Portillo Vazquez, Israel

AU - Stafford, Jamie M.

N1 - Funding Information: This material is based upon work supported by the National Science Foundation under grants no. PHY-1654219 and OAC-1531814 and by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics, within the framework of the Beam Energy Scan Theory (BEST) Topical Collaboration. We also acknowledge the support from the Center of Advanced Computing and Data Systems at the University of Houston. The work of R. B. is supported through DOE grant DEFG02-07ER41521. Publisher Copyright: © 2018

PY - 2019/2

Y1 - 2019/2

N2 - We analyze the recent STAR collaboration results on net-kaon fluctuations in the framework of the Hadron Resonance Gas (HRG) model. Our purpose is to extract the freeze-out temperature and chemical potential as functions of the collision energy. In our HRG model, we use the complete hadron spectrum from the latest PDG list. These results are compared to the freeze-out parameters obtained from a combined analysis of net-electric charge and net-proton fluctuations. At the highest collision energies, kaons need about 10-15 MeV higher freeze-out temperatures than the light hadrons. Predictions for moment ratios of the net-Lambda multiplicity distribution are obtained along the freeze-out lines. Lambda fluctuations are sensitive to the difference in the freeze-out temperatures observed in our analysis.

AB - We analyze the recent STAR collaboration results on net-kaon fluctuations in the framework of the Hadron Resonance Gas (HRG) model. Our purpose is to extract the freeze-out temperature and chemical potential as functions of the collision energy. In our HRG model, we use the complete hadron spectrum from the latest PDG list. These results are compared to the freeze-out parameters obtained from a combined analysis of net-electric charge and net-proton fluctuations. At the highest collision energies, kaons need about 10-15 MeV higher freeze-out temperatures than the light hadrons. Predictions for moment ratios of the net-Lambda multiplicity distribution are obtained along the freeze-out lines. Lambda fluctuations are sensitive to the difference in the freeze-out temperatures observed in our analysis.

KW - Heavy-ion collisions

KW - QCD thermodynamics

KW - Quark-gluon plasma

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SP - 799

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JO - Nuclear Physics A

JF - Nuclear Physics A

ER -

Analysis of Kaon fluctuations from the beam energy scan at RHIC

Abstract

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