Modeling of anomalous Wtb interactions using subsidiary fields

TL;DR

This paper introduces a novel simulation method for anomalous Wtb interactions at the LHC, using subsidiary fields to efficiently model gauge couplings with minimal samples, applicable to all single top production channels.

Contribution

The paper presents a new simulation approach employing auxiliary vector fields to model anomalous Wtb interactions, enabling accurate representation of gauge couplings with fewer samples.

Findings

Method accurately reproduces anomalous gauge couplings in simulations.

Applicable to all single top production channels at the LHC.

Demonstrated correctness of the simulation approach.

Abstract

A method to simulate anomalous fermion-boson interactions in Wtb vertex is presented with a minimal set of simulated samples of single top quark events at the LHC energies. In proposed method additional auxiliary vector fields corresponding to the Standard Model gauge fields are implemented for each type of the anomalous vertex structure. The method allows to simulate a manifestation of anomalous gauge couplings in two approaches used in experimental analyses either keeping only the linear order contributions in the anomalous couplings or keeping all contributions in numerators and denominators as appeared in matrix elements. All the single top quark production mechanisms, $t$-, $s$- and associative tW-channels are considered. The correctness of the proposed method is demonstrated.