Mass and rapidity dependent top quark forward-backward asymmetry in the effective Lagrangian approach

TL;DR

This paper investigates how the top quark forward-backward asymmetry varies with invariant mass and rapidity using an effective Lagrangian framework, constraining models with experimental data.

Contribution

It provides a systematic analysis of the asymmetry's dependence on mass and rapidity within the effective Lagrangian approach, evaluating model viability against experimental constraints.

Findings

Certain models are disfavored based on data

Some models are relatively favored

The effectiveness of the Lagrangian approach is assessed

Abstract

We study the invariant mass and rapidity dependent top quark forward-backward asymmetry from the effective Lagrangian viewpoint. The Wilson coefficients are constrained by the experimental observations and the concrete models that reproduce the low energy effective Lagaragians are considered. Some of them are disfavored and others relatively favored. For each cases, we estimate the appropriacy of the effective Lagrangian approach.