Speaker
Dr
Aoife Bharucha
(Uni Hamburg)
Description
We evaluate two-body decay modes of neutralinos in the Minimal Supersymmetric Standard Model with complex parameters (cMSSM). Assuming heavy scalar quarks we take into account all two-body decay channels involving charginos, neutralinos, (scalar) leptons, Higgs bosons and Standard Model gauge bosons. The evaluation of the decay widths is based on a full one-loop calculation including hard and soft QED radiation. Of particular phenomenological interest are decays involving the Lightest Supersymmetric Particle (LSP), i.e. the lightest neutralino, or a neutral or charged Higgs boson. For the chargino/neutralino sector we employ two different renormalization schemes, which differ in the treatment of the complex phases. We concentrate on the decay of the heaviest neutralino and present the results in the two different schemes. These corrections are important for the correct interpretation of LSP and Higgs production at the LHC and at a future linear e+e- collider.
Primary author
Dr
Aoife Bharucha
(Uni Hamburg)
