Pion electromagnetic form factor at finite temperature

Details Pion electromagnetic form factor at finite temperature Pion electromagnetic form factor at finite temperature

1996-08-07

arxiv.org/abs/nucl-th/9608010v1

Phys.Rev.C54:3218-3231,1996

Physics

Nuclear Physics

Nuclear Theory

29 pages (LaTex) + 11 figures

Scientific paper

10.1103/PhysRevC.54.3218

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.

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