Review of Flavor Anomalies

Abstract

Lepton flavor universality exists in the Standard Model, and hence any observation of the violation of this universality will be a hint for new physics. Recent experimental searches for processes violating this symmetry have attracted much attention among theorists and experimentalists alike. In recent years, such hints have been observed in flavor changing neutral current weak processes such as (Formula presented.) and charged current weak processes such as (Formula presented.) processes by collider experiments like Belle, Belle II, BaBar, LHCb, ATLAS, and CMS collaborations, where (Formula presented.) are the bottom, strange, and charm quarks, respectively, and (Formula presented.) stand for lepton and the corresponding lepton neutrino, respectively. This article is a review of some of the interesting anomalies observed in the B-sector and includes decays of (Formula presented.) mesons. � 2023 by the author.