RARE BARYONIC DECAYS Λb → Λl+l- IN THE TTM MODEL

Abstract

In the framework of the top triangle moose model, we analyze the rare decays Λb → Λl+l-(l = e, μ, τ) by using the form factors calculated in full QCD. We calculate the contributions of the new particles predicted by this model to observables, such as the branching ratios, forward–backward asymmetry (A FB ) and polarizations related these decay processes. We find that, in wide range of the parameter space, the values of the branching ratios are enhanced by one order of magnitude comparing to the standard model predictions. This model can also produce significant corrections to A FB , normal polarization PN and transversal polarization PT.