Rare baryonic decays ${\Lambda }_b\to \Lambda l^{+}{l}^{-}$ in the TTM model

Abstract

In the framework of the top triangle moose $(TTM)$ model, we analyze the rare decays ${\Lambda }_b\to \Lambda l^{+}{l}^{-}(l=e,\mu ,\tau )$ 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 $SM$ predictions. This model can also produce significant corrections to $A_{FB}$, normal polarization $P_N$ and transversal polarization $P_T$.

14 pages, 4 figures

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Cited by in corpus (4)

• Comparative analysis of the ${\Lambda }_b\to \Lambda {\ell }^{+}{\ell }^{-}$ decay in the SM, SUSY and RS model with custodial protection
• The ${\Lambda }_b\to \Lambda (\to p{\pi }^{-}){\mu }^{+}{\mu }^{-}$ decay in the aligned two-Higgs-doublet model
• Analysis of Angular Observables of ${\Lambda }_b\to \Lambda (\to p\pi ){\mu }^{+}{\mu }^{-}$ Decay in Standard and $Z^{\prime }$ Models
• 750 GeV diphoton excess confronted with a top-pion in the TTM model