Kumar, GirishGirishKumarMahajan, NamitNamitMahajan2025-08-302025-08-302016-03-2810.1103/PhysRevD.93.0540412-s2.0-84962339777https://d8.irins.org/handle/IITG2025/21933We calculate the zeros of angular observables P4′ and P5′ of the angular distribution of 4-body decay B→K∗(→Kπ)l+l- where LHCb, in its analysis of form-factor independent angular observables, has found deviations from the standard model predictions. In the large recoil region, we obtain relations between the zeros of P4′, P5′ and the zero (s0) of forward-backward asymmetry of lepton pair, AFB. These relations are independent of hadronic uncertainties and depend only on the Wilson coefficients. We also construct a new observable, OTL,R, whose zero in the standard model coincides with s0, but in the presence of new physics contributions will show different behavior. Moreover, the profile of the new observable, even within the standard model, is very different from AFB. We point out that precise measurements of these zeros in the near future would provide a crucial test of the standard model and would be useful in distinguishing between different possible new physics contributions to the Wilson coefficients.falseArticlehttps://arxiv.org/pdf/1412.29552470002928 March 20163054041arJournal4WOS:000372800700010