Discriminating 1D new physics solutions in b → sℓℓ decays * *Partly supported by the National Natural Science Foundation of China (11735003, 11975041, 11961141004), and the fundamental Research Funds for the Central Universities. Rui-Xiang Shi is supported by the National Natural Science Foundation of China (12147145) and Project funded by China Postdoctoral Science Foundation (2021M700343)

Abstract

The recent measurements of , , , , a set of CP-averaged angular observables for the decay and its isospin partner by the LHCb Collaboration consistently hint at lepton universality violation in the transitions. In this work, we first perform global fits to the data and show that five one-dimensional scenarios, i.e, , , , , and 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 and find that they cannot distinguish the five new physics scenarios. We then show that a newly constructed ratio can uniquely discriminate the five new physics scenarios in proper intervals of if it can be measured with percent-level precision.