Electroweak contributions to squark pair production at the CERN LHC

被引：42
|
作者：
Bornhauser, Sascha
Drees, Manuel
Dreiner, Herbi K.
Kim, Jong Soo
机构：
[1] Univ Bonn, Inst Phys, D-53115 Bonn, Germany
[2] Korea Adv Inst Sci & Technol, Sch Phys, Seoul 130012, South Korea
来源：
PHYSICAL REVIEW D | 2007年 / 76卷 / 09期
关键词：
D O I：
10.1103/PhysRevD.76.095020
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
In this paper we compute electroweak contributions to the production of squark pairs at hadron colliders. These include the exchange of electroweak gauge bosons in the s-channel as well as electroweak gaugino exchange in the t- and/or u-channel. In many cases these can interfere with the dominant QCD contributions. As a result, we find sizable contributions to the production of two SU(2) doublet squarks. At the LHC, they amount to 10% to 20% for typical mSUGRA (or CMSSM) scenarios, but in more general scenarios they can vary between -40% and +55%, depending on size and sign of the SU(2) gaugino mass. The electroweak contribution to the total squark pair production rate at the LHC is about 3.5 times smaller.
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页数：16
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