Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2012-02-02
Physics
High Energy Physics
High Energy Physics - Phenomenology
6 pages, 2 figures, talk given at the LCWS 2011, September 2011, Granada, Spain
Scientific paper
We review the evaluation of two-body decay modes of charginos in the Minimal Supersymmetric Standard Model with complex parameters (cMSSM). Assuming heavy scalar quarks we take into account all decay channels involving charginos, neutralinos, (scalar) leptons, Higgs bosons and SM gauge bosons. The evaluation of the decay widths is based on a full one-loop calculation including hard and soft QED radiation. Here we focus on the decays involving the Lightest Supersymmetric Particle (LSP), i.e. the lightest neutralino, or a heavier neutralino and a W boson. The higher-order corrections of the chargino decay widths can easily reach a level of \pm 10%, translating into corrections of similar size in the respective branching ratios. These corrections are important for the correct interpretation of LSP and heavier neutralino production at the LHC and at a future linear e+e- collider.
Heinemeyer Sven
Pahlen F. v. d.
Schappacher Christian
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