Electroweak Contributions to Squark Pair Production at the LHC

Details Electroweak Contributions to Squark Pair Production at the LHC Electroweak Contributions to Squark Pair Production at the LHC

2007-09-17

arxiv.org/abs/0709.2544v1

Phys.Rev.D76:095020,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

28 pages, 9 figures

Scientific paper

10.1103/PhysRevD.76.095020

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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