One-loop electroweak effects on stop-chargino production at LHC

Details One-loop electroweak effects on stop-chargino production at LHC One-loop electroweak effects on stop-chargino production at LHC

2008-12-23

arxiv.org/abs/0812.4375v3

Int.J.Mod.Phys.A24:5539-5559

Physics

High Energy Physics

High Energy Physics - Phenomenology

27 pages, 10 figures, Hard QED radiation added

Scientific paper

10.1142/S0217751X09047454

The process of stop-chargino production at LHC has been calculated in the Minimal Supersymmetric Standard Model at the complete electroweak one-loop level, assuming a mSUGRA symmetry breaking scheme. Several properties of the angular and invariant mass distributions of the basic bottom-gluon to stop-chargino amplitudes have been derived. For a meaningful collection of different benchmark points the overall electroweak one-loop effects are at most of the order of a few percent. At the realistically expected LHC accuracy, the main supersymmetric electroweak features of the process can be therefore essentially derived in this theoretical scheme from the simple Born level expressions.

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