Footprints of New Physics in the Angular Distribution of Flavour Changing Charged Current B0_s → K1(1270) (→ p(770)ℓνℓ Decay

Abstract

The New Physics effects observed through the anomalies in the b → clν¯l decay processes serve as an insight to look for the possibility of utilizing the observables inferred from the detailed angular analysis of b → ulν¯l decay at the quark level. A full differential angular distribution of the four-fold Footprints of New Physics in the Angular Distribution of Flavour Changing Charged Current Decay B0 s → K1(1270)(→ρ(770)π)lν¯l decay has been analyzed within the Standard Model and also in the model-independent framework. The detailed investigation of above mentioned Flavour Changing Charged Current process has been done to investigate the Physics Beyond the Standard Model. For this very semileptonic decay channel, multiple q 2 dependent physical observables along with a special focus on parallel angular coefficient functions have been calculated. Results, thus obtained, exhibit sensitivity of these observables to the NP Wilson Coefficients. Future experimental prospects would be enlightening for this kind of decay to unfold the underlying complete structure of NP from the quark flavour sector.