TY - JOUR
T1 - Chemical Equilibration and Transport Properties of Hadronic Matter near Tc
AU - Noronha-Hostler, J.
AU - Noronha, J.
AU - Ahmad, H.
AU - Shovkovy, Igor
AU - Greiner, C.
N1 - Funding Information:
J.N. acknowledges support from US-DOE Nuclear Science Grant No. DE-FG02-93ER40764. This work was supported by the Helmholtz International Center for FAIR within the LOEWE program launched by the State of Hesse.
PY - 2009/11/1
Y1 - 2009/11/1
N2 - We discuss how the inclusion of Hagedorn states near Tc leads to short chemical equilibration times of proton anti-proton pairs, K over(K, -) pairs, and Λ over(Λ, -) pairs, which indicates that hadrons do not need to be "born" into chemical equilibrium in ultrarelativistic heavy ion collisions. We show that the hadron ratios computed within our model match the experimental results at RHIC very well. Furthermore, estimates for η / s near Tc computed within our resonance gas model are comparable to the string theory viscosity bound η / s = 1 / 4 π. Our model provides a good description of the recent lattice results for the trace anomaly close to Tc = 196 MeV.
AB - We discuss how the inclusion of Hagedorn states near Tc leads to short chemical equilibration times of proton anti-proton pairs, K over(K, -) pairs, and Λ over(Λ, -) pairs, which indicates that hadrons do not need to be "born" into chemical equilibrium in ultrarelativistic heavy ion collisions. We show that the hadron ratios computed within our model match the experimental results at RHIC very well. Furthermore, estimates for η / s near Tc computed within our resonance gas model are comparable to the string theory viscosity bound η / s = 1 / 4 π. Our model provides a good description of the recent lattice results for the trace anomaly close to Tc = 196 MeV.
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U2 - 10.1016/j.nuclphysa.2009.10.122
DO - 10.1016/j.nuclphysa.2009.10.122
M3 - Article
AN - SCOPUS:71649084254
SN - 0375-9474
VL - 830
SP - 745c-748c
JO - Nuclear Physics A
JF - Nuclear Physics A
IS - 1-4
ER -