Analysis of Λ b → Λl + l − rare decays in a non-universal Z′ model

2017/05/30 by D. Banerjee, S. Sahoo
Physics and Astronomy · #Baryon #Differential (mechanical device) #Gauge (firearms) #Gauge theory #Lepton #Neutrino Physics Research #Particle physics theoretical and experimental studies #Physics beyond the Standard Model #Quantum Chromodynamics and Particle Interactions #Standard Model (mathematical formulation) #hep-ph

paper · pdf · doi:10.1088/1674-1137/41/8/083101

published as Chinese Physics C, Vol. 41, Issue. 8, pp. 083101 (10 pages August 2017) · 20 pages, 7 figures, 3 tables, It is accepted and to be published in Chinese Physics C

arxiv created 2017/05/30 · openalex created_date 2017/06/05 · openalex publication_date 2017/08/01 · arxiv updated 2017/12/18 · openalex updated_date 2026/08/05

Abstract

We investigate the rare baryonic Λ b → Λl + 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 → Λl + 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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