Work

B anomalies in the post- RK(*) era

Year: 2023

Type: article

Abstract: We discuss the status of $b\ensuremath{\rightarrow}s{\ensuremath{\ell}}^{+}{\ensuremath{\ell}}^{\ensuremath{-}}$ decays in the post-${R}_{{K}^{(*)}}$ era. The recent LHCb update of ${R}_{K}$ and ${R}_{{K}^{*}}$ measurements, which are now compatible with the Standard Model, constrain new physics contributions to be lepton-flavor universal, allowing only small deviations from this limit. In addition to the latest LHCb measurements of ${R}_{K}$ and ${R}_{{K}^{*}}$, we also include the recent CMS measurements of ${R}_{K}$ and of the branching ratio of ${B}^{+}\ensuremath{\rightarrow}{K}^{+}{\ensuremath{\mu}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}}$. We present a model-independent analysis of the $b\ensuremath{\rightarrow}s{\ensuremath{\ell}}^{+}{\ensuremath{\ell}}^{\ensuremath{-}}$ data and investigate the implications of the different sets of observables. In addition, we consider multidimensional fits and discuss the significance of more complex new physics scenarios compared to one- and two-dimensional scenarios.

Source: Physical review. D/Physical review. D.

DOI: 10.1103/physrevd.108.115037

Authors: T. Hurth, F. Mahmoudi, S. Neshatpour