Effective Lagrangian for charged Higgs couplings in MSSM

By Anastasios Psinas, Northeastern University

We extend former analyses of the supersymmetric loop correction to the charged Higgs couplings to include couplings between charged Higgs charginos and neutralinos.The effective one loop Lagrangian is then applied to the evaluation of the charged Higgs decays .The magnitude of the supersymmetric loop correction on branching ratios of the charged Higgs into charginos and neutralinos are investigated and found to be significant especially with regard to a trileptonic signal.CP effects on the branching ratios are also taken into account.