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 | |
| State | Published - Feb 2019 |
| Externally published | Yes |
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Keywords
- Heavy-ion collisions
- QCD thermodynamics
- Quark-gluon plasma
ASJC Scopus subject areas
- Nuclear and High Energy Physics
Cite this
Analysis of Kaon fluctuations from the beam energy scan at RHIC. / Ratti, Claudia; Bellwied, Rene; Noronha-Hostler, Jacquelyn; Parotto, Paolo; Portillo Vazquez, Israel; Stafford, Jamie M.
In: Nuclear Physics A, Vol. 982, 02.2019, p. 799-802.Research output: Contribution to journal › Article
}
TY - JOUR
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.
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
UR - http://www.scopus.com/inward/record.url?scp=85060126076&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85060126076&partnerID=8YFLogxK
U2 - 10.1016/j.nuclphysa.2018.10.008
DO - 10.1016/j.nuclphysa.2018.10.008
M3 - Article
AN - SCOPUS:85060126076
VL - 982
SP - 799
EP - 802
JO - Nuclear Physics, Section A
JF - Nuclear Physics, Section A
SN - 0375-9474
ER -