Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2007-01-16
Phys.Lett.B644:248-255,2007
Physics
High Energy Physics
High Energy Physics - Phenomenology
15 pages, 7 figures
Scientific paper
10.1016/j.physletb.2006.11.057
We study the complete one loop contribution to $H^\pm\to W^\pm V$, $V= Z, \gamma$, in the Minimal Supersymmetric Standard Model (MSSM). We evaluate the MSSM contributions 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 lightest stop becomes very light and hence squarks contribution is not decoupling, 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 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.
Arhrib Abdesslam
Benbrik Rachid
Chabab Mohamed
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