Analysis of Λb → Λl+ l− rare decays in a non-universal Z′ model. (August 2017)

• Record Type: Journal Article
• Authors: Banerjee, D.; Sahoo, S.
• Is Part Of: Chinese physics C. Volume 41:Number 8(2017:Aug.)
• Publication Date: 2017-08
• Subjects: 14.70.Pw -- 13.30.-a -- 12.15Mm; Z′ boson -- baryonic decays -- flavour-changing neutral currents -- heavy quark effective theory -- models beyond the standard model; Particles (Nuclear physics) -- Periodicals; Nuclear physics -- Periodicals; 539.76
• DOI: 10.1088/1674-1137/41/8/083101
• Languages: English
• ISSNs: 1674-1137

Abstract

Abstract: We investigate the rare baryonic Λb → 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 Λb → Λl + l − decays. We find significant deviations from their SM predictions, which could indicate new physics arising from the Z′ gauge boson.