TY - JOUR
T1 - Fast equilibration of hadrons in an expanding fireball
AU - Noronha-Hostler, J.
AU - Greiner, C.
AU - Shovkovy, I. A.
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2008/6/26
Y1 - 2008/6/26
N2 - Because of long chemical equilibration times for standard hadronic reactions in a hadron gas in relativistic heavy ion collisions, it was suggested that hadrons are born into equilibrium after the quark gluon plasma is formed. We develop a dynamical scheme, using master equations, in which Hagedorn states contribute to fast chemical equilibration times of baryons and kaons, just below the critical temperature, estimates of which are derived analytically. The hadrons quickly equilibrate for an initial over- or underpopulation of Hagedorn states. Our particle ratios compared to BNL Relativistic Heavy Ion Collider show a close match.
AB - Because of long chemical equilibration times for standard hadronic reactions in a hadron gas in relativistic heavy ion collisions, it was suggested that hadrons are born into equilibrium after the quark gluon plasma is formed. We develop a dynamical scheme, using master equations, in which Hagedorn states contribute to fast chemical equilibration times of baryons and kaons, just below the critical temperature, estimates of which are derived analytically. The hadrons quickly equilibrate for an initial over- or underpopulation of Hagedorn states. Our particle ratios compared to BNL Relativistic Heavy Ion Collider show a close match.
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U2 - 10.1103/PhysRevLett.100.252301
DO - 10.1103/PhysRevLett.100.252301
M3 - Article
AN - SCOPUS:46349105329
SN - 0031-9007
VL - 100
JO - Physical Review Letters
JF - Physical Review Letters
IS - 25
M1 - 252301
ER -