Dileptons from disoriented chiral condensates

被引：22

作者：

Kluger, Y ^{[1
]}

Koch, V ^{[1
]}

Randrup, J ^{[1
]}

Wang, XN ^{[1
]}

机构：

[1] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA

来源：

PHYSICAL REVIEW C | 1998年 / 57卷 / 01期

关键词：

D O I：

10.1103/PhysRevC.57.280

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：

Disoriented chiral condensates or long wavelength pionic oscillations and their interaction with the thermal environment can be a significant source of dileptons. We calculate the yield of such dilepton production within the linear a model. both in a quantum mean-field treatment and in a semiclassical approximation. We then illustrate the basic features of the dilepton spectrum in a schematic model. We find that dilepton yield with invariant mass near and below 2m(pi) due to the soft pion modes can be up to two orders of magnitude larger than the corresponding equilibrium yield.

引用

页码：280 / 290

页数：11

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