Flavor violation and tan β in gauge mediated models with messenger-matter mixing Original Research Article

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, a wide range of tan β is allowed. It is shown that existing experimental limits on processes with lepton flavor violation, and on K0-K0, D0-D0 and B0-B0 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 → eγ, τ → μγ and b → sy 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.