Higher moments of net baryon distribution as probes of the QCD critical point
Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
Standard
Higher moments of net baryon distribution as probes of the QCD critical point. / Zhou, Y.; Shi, S. S.; Xiao, K.; Wu, K. J.; Liu, F.
I: Physical Review C, Bind 82, Nr. 1, 014905, 21.07.2010.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
Harvard
APA
Vancouver
Author
Bibtex
}
RIS
TY - JOUR
T1 - Higher moments of net baryon distribution as probes of the QCD critical point
AU - Zhou, Y.
AU - Shi, S. S.
AU - Xiao, K.
AU - Wu, K. J.
AU - Liu, F.
PY - 2010/7/21
Y1 - 2010/7/21
N2 - It is crucially important to find an acceptance and late collision process independent observable in searching for the possible critical point predicted by QCD. By utilizing a multiphase transport (AMPT) model and ultrarelativistic quantum molecular dynamics (UrQMD) model, we study the centrality and evolution time dependence of higher moments of net baryon distribution in Au + Au collisions at root s(NN) = 17.3 GeV. The results suggest that kurtosis and skewness are less sensitive to the acceptance effect and late collision process. Thus, they should be good observables providing the information on the early stage of a heavy-ion collision. In addition, our study shows that the product of kurtosis times sigma(2) of the net proton distribution is quite different from that of the net baryon distribution when the collision energy is lower than root s(NN) = 20 GeV, the Monte Carlo calculations on kurtosis.sigma(2) have a deviation from the theoretical predictions.
AB - It is crucially important to find an acceptance and late collision process independent observable in searching for the possible critical point predicted by QCD. By utilizing a multiphase transport (AMPT) model and ultrarelativistic quantum molecular dynamics (UrQMD) model, we study the centrality and evolution time dependence of higher moments of net baryon distribution in Au + Au collisions at root s(NN) = 17.3 GeV. The results suggest that kurtosis and skewness are less sensitive to the acceptance effect and late collision process. Thus, they should be good observables providing the information on the early stage of a heavy-ion collision. In addition, our study shows that the product of kurtosis times sigma(2) of the net proton distribution is quite different from that of the net baryon distribution when the collision energy is lower than root s(NN) = 20 GeV, the Monte Carlo calculations on kurtosis.sigma(2) have a deviation from the theoretical predictions.
KW - SUPERDENSE HADRONIC MATTER
KW - PARTICLE-PRODUCTION
KW - FLUCTUATIONS
KW - PARTON
KW - MODEL
U2 - 10.1103/PhysRevC.82.014905
DO - 10.1103/PhysRevC.82.014905
M3 - Journal article
VL - 82
JO - Physical Review C
JF - Physical Review C
SN - 2469-9985
IS - 1
M1 - 014905
ER -
ID: 288780596