PHOTON PRODUCTION THROUGH A1 RESONANCE IN HIGH-ENERGY HEAVY-ION COLLISIONS

被引：114

作者：

XIONG, L

SHURYAK, E

BROWN, GE

机构：

[1] Department of Physics, State University of New York at Stony Brook, Stony Brook

来源：

PHYSICAL REVIEW D | 1992年 / 46卷 / 09期

关键词：

D O I：

10.1103/PhysRevD.46.3798

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Electromagnetic radiation from excited hadronic matter is one of the best ways to study the properties of matter. Considering various processes in the hadronic gas, Kapusta, Lichard, and Seibert have found a pirho --> pigamma reaction with an intermediate virtual pi or rho to be the main source of photons with energy greater than 0.7 GeV. However, at temperatures considered, T = 100-200 MeV, a pirho pair can easily form an A1(1260) resonance, and we show that this mechanism leads to photon production rates exceeding those suggested previously.

引用

页码：3798 / 3801

页数：4

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