Neutralino Decays in the Complex MSSM at One-Loop: a Comparison of On-Shell Renormalization Schemes

Understand

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.