Higgs production constraints on anomalous fermion couplings

TL;DR

This paper investigates how anomalous fermion couplings, which are not gauge invariant in the Standard Model, can be constrained through Higgs production data at the LHC, including effects on quarks and tau leptons.

Contribution

It introduces a method to derive constraints on anomalous fermion couplings by linking them to Higgs production processes at the LHC, considering gauge invariance restoration.

Findings

Constraints on quark CMDM and CEDM from Higgs data

Limits on tau-lepton anomalous magnetic and electric dipole moments

Bounds on dimension eight gluonic couplings

Abstract

Certain anomalous fermion-gauge boson couplings, such as the flavor diagonal anomalous color magnetic (CMDM) and color electric (CEDM) dipole moments of quarks are not fully gauge invariant under the SM. Restoring gauge invariance with an elementary Higgs doublet implies that they also contribute to Higgs boson production at the LHC and we study the corresponding constraints that can be placed on them. In a similar manner we study the constraints that can be placed on the $\tau$-lepton anomalous magnetic moment, electric dipole moment, weak dipole moments, and dimension eight gluonic couplings at the LHC.