Anomalous gauge couplings vis-$\grave{a}$-vis $(g-2)_\mu$ and flavor observables

TL;DR

This paper reevaluates non-standard triple gauge couplings using recent muon g-2 results and B-decay measurements within SMEFT, deriving constraints on new physics contributions and comparing them with LHC data.

Contribution

It introduces updated constraints on dimension-6 bosonic operators affecting gauge couplings based on recent experimental data and theoretical calculations.

Findings

Constraints on Wilson coefficients are tightened by recent measurements.

Comparisons show LHC bounds are complementary to low-energy observables.

New physics contributions to gauge couplings are limited by combined data.

Abstract

We reassess non-standard triple gauge couplings in the light of the recent $(g-2)_\mu$ measurement at FNAL, the new lattice theory result of $(g-2)_\mu$ and the updated measurements of several $B$-decay modes. In the framework of SMEFT, three bosonic dimension-6 operators are invoked to parametrize physics beyond the Standard Model and their contributions to such low-energy observables computed. Constraints on the corresponding Wilson coefficients are then derived from fits to the current experimental bounds on the observables and compared with the most stringent ones available from the 13 TeV LHC data in the $W^+ W^-$ and $W^\pm Z$ production channels.