Pion electromagnetic form factor at finite temperature

被引：36
|
作者：
Song, C
Koch, V
机构：
[1] Nuclear Science Division, MS 70A-3307, Lawrence Berkeley Natl. Laboratory, Berkeley
来源：
PHYSICAL REVIEW C | 1996年 / 54卷 / 06期
关键词：
D O I：
10.1103/PhysRevC.54.3218
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
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 nonzero temperature in the soft pion limit. The in-medium electromagnetic form factor of the pion is obtained in the timelike 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.
引用
收藏
页码：3218 / 3231
页数：14
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