Towards global analysis of b --> s l^+ l^-

TL;DR

This paper discusses the progress in the experimental and theoretical analysis of b --> s l^+ l^- decays, highlighting recent data, refined methods, and the potential of angular observables for global analysis and new physics constraints.

Contribution

It provides a comprehensive overview of recent experimental data, theoretical refinements, and the emerging role of angular observables in global analyses of b --> s l^+ l^- decays.

Findings

Initial combined data analysis constrains short-distance couplings.

Angular observables reduce hadronic uncertainties.

Potential for new physics insights through global analysis.

Abstract

Flavour changing neutral current decays mediated by b --> s l^+ l^- were under experimental investigation at B-factories and the Tevatron during the last decade and the final analysis are expected soon. Moreover, new data has been released this summer and more is currently taken at the LHC mainly by LHCb. The theoretical methods for both inclusive and exclusive decays have been also refined and a global analysis of these decays becomes more and more feasible. First analysis of combined b --> s l^+ l^- data towards a global analysis provide constraints on the involved short distance couplings. Recently, specially designed observables, which can be determined in the angular distribution of B --> K^*(--> K pi) l^+ l^-, became of particular interest since they are subject of reduced hadronic uncertainties and currently their potential role in a global analysis is under investigation.