Probing new physics in B_s → (K,K^*)τν and B → πτν decays

2019/08/17 by Rajeev, N, Dutta, Rupak
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph)

paper · doi:10.48550/arxiv.1908.06244

Abstract

Motivated by the anomalies present in b → u and b → c semileptonic decays, we study the corresponding B_s → (K,K^*) τν and B → πτν decays within an effective field theory formalism. Our analysis is based on a strict model dependent assumption, i.e., we assume that b → u and b → c transition decays exhibit similar new physics pattern. We give prediction of various observables such as the branching fraction, ratio of branching ratio, lepton side forward-backward asymmetry, longitudinal polarization fraction of the charged lepton and convexity parameter in the standard model and in the presence of vector type new physics couplings.

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