RARE BARYONIC DECAYS Λb → Λl+l- IN THE TTM MODEL
In the framework of the top triangle moose model, we analyze the rare decays Λ b → 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 P N and transversal polarization P T .