Thermalization through Hagedorn states - the importance of multiparticle collisions

Abstract

Quick chemical equilibration times of hadrons within a hadron gas are explained dynamically using Hagedorn states, which drive particles into equilibrium close to the critical temperature. Within this scheme master equations are employed for the chemical equilibration of various hadronic particles like (strange) baryon and antibaryons. A comparison of the Hagedorn model to recent lattice results is made and it is found that for both Tc =176 MeV and Tc=196 MeV, the hadrons can reach chemical equilibrium almost immediately, well before the chemical freeze-out temperatures found in thermal fits for a hadron gas without Hagedorn states.

8 pages, 3 figures, talk presented at the International Conference on Strangeness in Quark Matter, Buzios, Rio de Janeiro, Brazil, Sept. 27 - Oct. 2, 2009

References in corpus (7)

• The QCD transition temperature: results with physical masses in the continuum limit
• The QCD Equation of State with almost Physical Quark Masses
• Transport Coefficients of Hadronic Matter near $T_c$
• Fast Equilibration of Hadrons in an Expanding Fireball
• The order, shape and critical point for the quark-gluon plasma phase transition
• Chemical equilibration due to heavy Hagedorn states
• The thermodynamics for a hadronic gas of fireballs with internal color structures and chiral fields

Cited by in corpus (5)

• Thermalization of Hadrons via Hagedorn States
• Fast Dynamical Evolution of Hadron Resonance Gas via Hagedorn States
• Equilibration of hadrons in HICs via Hagedorn States
• Asymptotic Regge Trajectories of Non-strange Mesons
• Remarkable Features of Decaying Hagedorn States