QCD corrections to scalar quark decays

被引：56

作者：

Djouadi, A

Hollik, W

Junger, C

机构：

[1] Institut für Theoretische Physik, Universität Karlsruhe, Karlsruhe

来源：

PHYSICAL REVIEW D | 1997年 / 55卷 / 11期

关键词：

D O I：

10.1103/PhysRevD.55.6975

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In supersymmetric theories, the main decay modes of scalar quarks are decays into quarks plus charginos or neutralinos, if the gluinos are heavy enough. We calculate the O(alpha(s)) QCD corrections to these decay modes in the minimal supersymmetric extension of the standard model. In the case of scalar top and bottom quarks, where mixing effects can be important, these corrections can reach values of the order of a few ten percent. They can be either positive or negative and increase logarithmically with the gluino mass. For the scalar partners of light quarks, the corrections do not exceed in general the level of ten percent for gluino masses less than 1 TeV.

引用

页码：6975 / 6985

页数：11

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