Left-right squarks mixings effects in charged Higgs bosons decays H±→W±(γ,Z) in the MSSM

We study the complete one loop contribution to H±→W±V, V=Z,γ, in the Minimal Supersymmetric Standard Model (MSSM). We evaluate the MSSM contributions taking into account B→Xsγ constraint as well as experimental constraints on the MSSM parameters. In the MSSM, we found that in the intermediate range of tanβ≲10 and for large At and large μ, where lightest stop becomes very light and hence squarks contribution is not decoupling, the branching ratio of H±→W±Z can be of the order 10−3 while the branching ratio of H±→W±γ is of the order 10−5. We also study the effects of the CP violating phases of soft SUSY parameters and found that they can modify the branching ratio by about one order of magnitude.