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arXiv · 1610.01469

Searching for New Physics in Semi-Leptonic Baryon Decays

Elvio Di Salvo·Ziad J. Ajaltouni
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Abstract

We propose two different and complementary observables for singling out possible signals of physics beyond the standard model in the semi-leptonic decays $Λ_b \to Λ_c \ell{\bar ν}_{\ell}$, both with the $τ$ lepton and with a light lepton. The two observables are the partial decay width and a T-odd asymmetry, whose respective sensitivities to scalar and/or pseudo-scalar coupling are calculated as functions of the parameters characterizing new physics. Two different form factors are used. Three particular cases are discussed and analyzed in detail.

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Elvio Di Salvo, Ziad J. Ajaltouni. 2017-03-18. Searching for New Physics in Semi-Leptonic Baryon Decays. https://doi.org/10.1142/s0217732317500432

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