New physics from flavour

TL;DR

This paper reviews experimental searches for physics beyond the Standard Model through heavy meson interactions, CP violation, rare decays, and dark matter, setting constraints on new physics at very high energy scales.

Contribution

It provides a comprehensive overview of experimental constraints on new physics models from heavy meson decay measurements and explores potential deviations from the Standard Model.

Findings

Limits on new physics scales from 100 to 100,000 TeV.

Constraints on specific NP models from B decay measurements.

Hints of deviations in certain B decay channels.

Abstract

I report on investigations of physics beyond the Standard Model using experiments designed to investigate $b$ quark and $c$ quark interactions. Generalized searches involving loop diagrams using heavy meson mixing and CP violation experiments imply limits on New Physics (NP) at large scales from 100-100,000 TeV. There are ways of avoiding these limits, but satisfying their requirements puts severe restrictions on NP properties. Specific constraints on NP models are discussed from individual measurements including b-> s gamma, Bs->mu+ mu-, B0 -> K* l+ l-, and CP violation in the B0 and Bs systems. Hints of deviations from Standard Model predictions from other decays including B- -> tau- nu, and B->D(*)tau- nu$\ are investigated. Finally, searches for dark matter and Majorana neutrinos are reviewed.