Flavor violation and $\tanβ$ in gauge mediated models with messenger-matter mixing

S. L. Dubovsky; D. S. Gorbunov

doi:10.1016/S0550-3213(99)00346-6

paper

Flavor violation and $tan β$ in gauge mediated models with messenger-matter mixing

arXiv:hep-ph/9807347 · doi:10.1016/S0550-3213(99)00346-6

Abstract

We consider the Minimal Gauge Mediated Model (MGMM) with either fundamental or antisymmetric messenger multiplets and study consequences of messenger-matter mixing. We find that in these models, unlike MGMM without mixing, wide range of $tan β$ is allowed. It is shown that existing experimental limits on processes with lepton flavor violation, and on $K^{0} - K ˉ^{0}$ , $D^{0} - D ˉ^{0}$ and $B^{0} - B ˉ^{0}$ - mixing place significant constraints on relevant coupling constants and mixing parameters. On the other hand, the contributions of the messenger-matter mixing to the rates of $τ \to e γ$ , $τ \to μ γ$ and $b \to s γ$ may be well below the present experimental limits depending on the value of $tan β$ . We also point out the possibility of sizeable slepton oscillations in this model.

25 pages, 3 figures; the cases of high and low $tan β$ are considered separately, the limits are stronger for high $tan β$

Flavor violation and $tan β$ in gauge mediated models with messenger-matter mixing

Abstract

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Flavor violation and tanβ in gauge mediated models with messenger-matter mixing

Abstract

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Flavor violation and $tan β$ in gauge mediated models with messenger-matter mixing