Full analysis of general non-standard tbW couplings

Abstract

Possible non-standard couplings which could contribute to the t -> b W process are studied based on the effective-Lagrangian approach. The corresponding effective Lagrangian consists of four kinds of dimension-6 effective operators, each of which has an independent coupling constant. In this analysis, all those couplings are treated as complex numbers and constraints on them are estimated by using recent experimental data from the LHC. We point out that the resultant constraints on those couplings are still not that strong because contributions from some couplings can work oppositely with each other.

One comment and two related references added. Final version to appear in Phys.Lett.B

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Cited by in corpus (12)

• The Standard Model as an Effective Field Theory
• Constraining the top-Higgs sector of the Standard Model Effective Field Theory
• Right-handed charged currents in the era of the Large Hadron Collider
• Is there room for CP violation in the top-Higgs sector?
• New limits on anomalous contributions to the $Wtb$ vertex
• Probing $Zt\bar{t}$ couplings using $Z$ boson polarization in $ZZ$ production at hadron colliders
• Modeling of anomalous Wtb interactions using subsidiary fields
• Top and bottom tensor couplings from a color octet scalar
• Transverse Momentum Resummation for $s$-channel single top quark production at the LHC
• The right top coupling in the aligned two-Higgs-doublet model
• Refined analysis and updated constraints on general non-standard tbW couplings
• Constraints on generalized non-standard $tbW$ couplings