Pion damping width from SU(2) x SU(2) NJL model
arXiv:nucl-th/0303034 · doi:10.1134/1.1634332
Abstract
Within the framework of the NJL model, we investigate the modification of the pion damping width in a hot pion gas for temperatures ranging from 0 to 180 MeV. The pion is found to broaden noticeably at T > 60 MeV. Near the chiral phase transition T ~ 180 MeV, the pion width is saturated and amounts to 70 MeV. The main contribution to the width comes from pion-pion collisions. Other contributions are found negligibly small.
arXiv commentLaTeX2e, 13 pages, 2 figures
References in corpus (7)
- QCD Phenomenology based on a Chiral Effective Lagrangian
- Chiral perturbation theory
- Low-mass e+e- pair production in 158 A GeV Pb-Au collisions at the CERN SPS, its dependence on multiplicity and transverse momentum
- Recent results from Pb-Au collisions at 158 GeV/c per nucleon obtained with the CERES spectrometer
- Pi-Pi scattering lengths at finite temperature
- Finite pion width effects on the rho--meson
- Dilepton Enhancement by Thermal Pion Annihilation in the CERES Experiment