Searching for new physics in semi-leptonic baryon decays

2016/10/31 by E. Di Salvo, Elvio Di Salvo, Z. J. Ajaltouni +1
Computer Science · Physics and Astronomy · #Baryon #Computational Physics and Python Applications #Coupling (piping) #Lepton #Neutrino Physics Research #Observable #Particle physics theoretical and experimental studies #Physics beyond the Standard Model #Scalar (mathematics) #Standard Model (mathematical formulation) #hep-ph

paper · pdf · doi:10.1142/s0217732317500432

published as Mod. Phys. Lett. A Vol. 32, No. 8 (2017) 1750043 · 14 pages, 2 figures

openalex created_date 2016/10/14 · openalex publication_date 2017/02/28 · arxiv created 2017/03/18 · arxiv updated 2017/03/21 · openalex updated_date 2026/08/05

Abstract

We propose two different and complementary observables for singling out possible signals of physics beyond the Standard Model (SM) in the semi-leptonic decays [Formula: see text], both with the [Formula: see text] 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 (NP). Two different form factors are used. Three particular cases are discussed and analyzed in detail.

Citations

• Bound on the curvature of the Isgur-Wise function of the baryon semileptonic decayΛb→Λcℓν¯ℓ
• T-violating triple product asymmetries inΛb→Λπ+π−decay
• Diquarks andΛb→Λcweak decays
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• The Higgs: so simple yet so unnatural
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Evidence for an Excess ofB¯→D(*)τ−ν¯τDecays
• Big-Bang Nucleosynthesis