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arXiv · 1705.10458

Analysis of $Λ_b\rightarrowΛl^+ l^-$ rare decays in a non-universal $Z'$ model

D. Banerjee·S. Sahoo
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Abstract

We investigate the rare baryonic $Λ_b\rightarrowΛl^+ l^-$ decays in a non-universal $Z'$ model, which is one of the well-motivated extensions of the standard model (SM). Considering the effects of $Z'$-mediated flavour-changing neutral currents (FCNCs) we analyse the differential decay rate, forward-backward asymmetries and lepton polarisation asymmetries for the $Λ_b\rightarrowΛl^+ l^-$ decays. We find significant deviations from their SM predictions, which could indicate new physics arising from the $Z'$ gauge boson.

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D. Banerjee, S. Sahoo. 2017-05-30. Analysis of $Λ_b\rightarrowΛl^+ l^-$ rare decays in a non-universal $Z'$ model. https://doi.org/10.1088/1674-1137%2F41%2F8%2F083101

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