Comments on two papers by Kapusta and Wong
We critically examine recently published results on the thermal production of massive vector bosons in a quark-gluon plasma. We claim the production rate is a collinear safe observable.
hep-ph↗
arXiv subjects
M. Le Bellac
Publications and source records attributed to M. Le Bellac.
Damping Rate of Quasiparticles in Degenerate Ultrarelativistic Plasmas
We compute the damping rate of a fermion in a dense relativistic plasma at zero temperature. Just above the Fermi sea, the damping rate is dominated by the exchange of soft magnetic photons (or gluons in QCD) and is proportional to $(E-μ)$, where E is the fermion energy and $μ$ the chemical potential. We also compute the contribution of soft electric photons and of hard photons. As in the nonrelativistic case, the contribution of longitudinal photons is proportional to $(E-μ)^2$, and is thus non leading in the relativistic case.
hep-ph↗