CP violation in Charged Higgs Bosons decays $H^\pm \to W^\pm (γ, Z)$ in the Minimal Supersymmetric Standard Model (MSSM)

Details CP violation in Charged Higgs Bosons decays $H^\pm \to W^\pm (γ, Z)$ in the Minimal Supersymmetric Standard Model (MSSM) CP violation in Charged Higgs Bosons decays $H^\pm \to W^\pm (γ, Z)$ in the Minimal Supersymmetric Standard Model (MSSM)

2007-08-09

arxiv.org/abs/0708.1301v1

Int.J.Mod.Phys.A22:6022-6032,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

Invited talk at CTP Symposium on Supersymmetry at LHC: Theoretical and Experimental Prospectives, Cario, Egypt, 11-14 Mar 2007

Scientific paper

10.1142/S0217751X07039201

One loop mediated charged Higgs bosons decays $H^\pm\to W^\pm V$, $V= Z, \gamma$ are studied in the Minimal Supersymmetric Standard Model (MSSM) with and without CP violating phases. We evaluate the MSSM contributions to these processes taking into account $B\to X_s\gamma$ constraint as well as experimental constraints on the MSSM parameters. In the MSSM, we found that in the intermediate range of $\tan\beta \la 10$ and for large A_t and large $\mu$, where the lightest top squark becomes very light and hence non-decoupled, the branching ratio of $H^\pm \to W^{\pm} Z$ can be of the order 10^{-3} while the branching ratio of $H^\pm \to W^{\pm} \gamma$ is of the order 10^{-5}. We found also that the CP violating phases of soft SUSY parameters can modify the branching ratio by about one order of magnitude. We also show that MSSM with CP violating phases lead to CP-violating asymmetry in the decays $H^+ \to W^+V$ and $H^- \to W^-V$. Such CP asymmetry can be rather large and can reach 80% in some region of parameter space.

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