Chemical Equilibration and Transport Properties of Hadronic Matter near Tc

J. Noronha-Hostler, J. Noronha, H. Ahmad, Igor Shovkovy, C. Greiner

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

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.

Original languageEnglish (US)
JournalNuclear Physics A
Volume830
Issue number1-4
DOIs
StatePublished - Nov 1 2009

Fingerprint

chemical properties
transport properties
protons
ionic collisions
hadrons
string theory
chemical equilibrium
inclusions
viscosity
anomalies
estimates
gases

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Chemical Equilibration and Transport Properties of Hadronic Matter near Tc . / Noronha-Hostler, J.; Noronha, J.; Ahmad, H.; Shovkovy, Igor; Greiner, C.

In: Nuclear Physics A, Vol. 830, No. 1-4, 01.11.2009.

Research output: Contribution to journalArticle

Noronha-Hostler, J. ; Noronha, J. ; Ahmad, H. ; Shovkovy, Igor ; Greiner, C. / Chemical Equilibration and Transport Properties of Hadronic Matter near Tc In: Nuclear Physics A. 2009 ; Vol. 830, No. 1-4.
@article{f6cd55582bdd465aa2e67d3edbbb5583,
title = "Chemical Equilibration and Transport Properties of Hadronic Matter near Tc",
abstract = "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.",
author = "J. Noronha-Hostler and J. Noronha and H. Ahmad and Igor Shovkovy and C. Greiner",
year = "2009",
month = "11",
day = "1",
doi = "10.1016/j.nuclphysa.2009.10.122",
language = "English (US)",
volume = "830",
journal = "Nuclear Physics A",
issn = "0375-9474",
publisher = "Elsevier",
number = "1-4",

}

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.

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.

UR - http://www.scopus.com/inward/record.url?scp=71649084254&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=71649084254&partnerID=8YFLogxK

U2 - 10.1016/j.nuclphysa.2009.10.122

DO - 10.1016/j.nuclphysa.2009.10.122

M3 - Article

VL - 830

JO - Nuclear Physics A

JF - Nuclear Physics A

SN - 0375-9474

IS - 1-4

ER -