The rare decay $t\to c\gamma$ in the General 2HDM type III

Abstract

We consider the branching ratio for the process $t\to c\gamma$ in the context of the General Two Higgs Doublet Model type III. We find that taking into account reasonable values for the parameter $\tan \beta$ is possible to get values of this branching ratio up to orders of magnitude lying in the range of sensitivity of near future top quark experiments. For values of $B(t\to c\gamma )\sim 1-9\times 10^{-5}$, values between 8-15 for $\tan \beta$ are allowed.

Comments: 12 pages, 3 eps figures, RevTex4