Imprints of new physics in Λb → Λ∗l+l− decay in nonuniversal Z′ model

Abstract

Inspired by various updated tantalizing results of LHCb on baryonic sector we study the [Formula: see text] decay in nonuniversal [Formula: see text] model. We present the fourfold angular distributions of the decay in terms of transversity amplitudes. We structure the observables: differential branching ratio, lepton side forward–backward asymmetries and polarization fractions in terms of the transversity amplitudes and incorporate the new physics (NP) terms in it. We reduce the number of the form factors using the improved Isgur–Wise relations. We study the observables in the Standard Model (SM) as well as in nonuniversal [Formula: see text] model. The predicted values are very interesting for the high energy physics community and results might provide prominent footprints of NP.