Implications of the experimental results on rare b --> s + (gamma, l^+ l^-) decays

TL;DR

This paper reviews recent high-precision experimental results on rare B-meson decays involving b --> s transitions, analyzing their implications for testing the Standard Model and constraining new physics.

Contribution

It synthesizes recent experimental data from multiple collaborations to evaluate their impact on Standard Model tests and new physics constraints in rare B-meson decays.

Findings

Results are consistent with the Standard Model.

Data leave room for potential new physics contributions.

Stronger constraints on nonstandard effects are derived.

Abstract

The experimental measurements of flavor-changing neutral-current B-meson decays governed by b --> s + (gamma, l^+ l^-) transitions have entered a new level of precision. Recent results by Belle, CDF, Babar, and LHCb on B -->K^(*) l^+ l^- and B_s --> mu^+ mu^- decays are used in model-(in)dependent analyses to test the Standard Model predictions and to derive stronger constraints on nonstandard contributions. While in agreement with the Standard Model, they still leave sizable room for new physics.