Discriminating 1D new physics solutions in b→slldecays

The recent measurements of RK^(+),R_(K_(S)^(O)),RK^(*+),Bs→μ+μ-,a set of CP-averaged angular observables for the B^(0)→K^(*0)μ^(+)μ^(-)decay and its isospin partner B^(+)→K^(*+)μ^(+)μ^(-)by the LHCb Collaboration consistently hint at lepton universality violation in the b→sll transitions.In this work,we first perform global fits to the b→sll data and show that five one-dimensional scenarios,i.e,δC_(9)^(μ),δC_(10)^(μ),δC_(L)^(μ),δC_(9)^(μ)=C_(10)^(μ’),andδC_(9)^(μ)=-C_(9)^(μ’)can best explain the so-called B anamolies.Furthermore,we explore how these scenarios can be distinguished from each other.For this purpose,we first study the combinations of four angular asymmetries Ai(i=3,4,5,9)and find that they cannot distinguish the five new physics scenarios.We then show that a newly constructed ratio RS can uniquely discriminate the five new physics scenarios in proper intervals of q^(2) if it can be measured with percent-level precision.