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

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.

Comments: 13 pages. Typos corrected, figures updated and a few segments expanded. Minor change in the results. Version to appear in PRD