K*0/K yield ratios in central Au+Au collisions at BES energies are suppressed relative to peripheral collisions and thermal predictions, indicating hadronic rescattering that strengthens at lower energies.
Chemical relaxation time of pions in hot hadronic matter
1 Pith paper cite this work. Polarity classification is still indexing.
1
Pith paper citing it
abstract
We calculate characteristic time scales for chemical equilibration of pions in hot hadronic matter using an effective chiral Lagrangian. We find that inelastic processes involving the vector and axial vector mesons reduce the chemical equilibration time by a factor of $\sim 10$ compared to the result previously calculated in chiral perturbation theory. For a temperature of $T\sim 150 MeV$ we obtain a chemical relaxation time of $\tau_{ch} \simeq 10 fm/c$, which is comparable with typical time scales for a hadronic system generated in SPS-energy heavy ion collisions. The effect of baryons is also estimated and found to be negligible for SPS-energies but important for AGS-energies. We predict, that chemical freeze-out should take place at considerable higher temperatures $\Delta T \simeq 20 MeV$ than thermal freeze-out and that the hadronic phase would not sustain a pion chemical potential larger than $100 MeV$.
fields
nucl-ex 1years
2026 1verdicts
ACCEPT 1representative citing papers
citing papers explorer
-
Probing Late-Stage Hadronic Interactions at High Baryon Density via $K^{*0}$ Production in the RHIC Beam Energy Scan Program
K*0/K yield ratios in central Au+Au collisions at BES energies are suppressed relative to peripheral collisions and thermal predictions, indicating hadronic rescattering that strengthens at lower energies.