Pion electromagnetic form factor at finite temperature
Nuclear Theory
2008-11-26 v1 High Energy Physics - Phenomenology
Abstract
Temperature effects on the electromagnetic couplings of pions in hot hadronic matter are studied with an effective chiral Lagrangian. We show that the Ward-Takahashi identity is satisfied at non-zero temperature in the soft pion limit. The in-medium electromagnetic form factor of the pion is obtained in the time-like region and shown to be reduced in magnitude, especially near the vector-meson resonance region. Finally, we discuss the consequences of this medium effect on dilepton production from hot hadronic matter.
Cite
@article{arxiv.nucl-th/9608010,
title = {Pion electromagnetic form factor at finite temperature},
author = {Chungsik Song and Volker Koch},
journal= {arXiv preprint arXiv:nucl-th/9608010},
year = {2008}
}
Comments
29 pages (LaTex) + 11 figures