Photon polarization operator in an external color field

被引：0

作者：

Zhukovskii, VC ^{[1
]}

Mamsurov, IV ^{[1
]}

机构：

[1] Moscow MV Lomonosov State Univ, Moscow 119899, Russia

来源：

PHYSICS OF ATOMIC NUCLEI | 1998年 / 61卷 / 01期

关键词：

D O I：

暂无

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：

The photon polarization operator in an external non-Abelian chromomagnetic field simulating a QCD vacuum gluon condensate is considered. The one-loop quark contribution to the photon polarization operator is calculated for the SU(2) and SU(3) gauge color groups. The resulting imaginary part of the photon polarization operator is used to analyze the effect of the gluon-condensate field on the production of quark-antiquark pairs in electron-positron annihilation. The relevant cross section is found to be a nonanalytic function of the condensate field, and the effect of this field is estimated for the case of heavy quarks.

引用

页码：87 / 93

页数：7

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