Chromomagnetic dipole moment of the top quark in the Bestest Little Higgs model

TL;DR

This paper computes the top quark's chromomagnetic dipole moment within the Bestest Little Higgs model, revealing values around 10^{-5} to 10^{-6} influenced mainly by the Standard Model Higgs boson.

Contribution

It provides the first detailed calculation of the top quark's chromomagnetic dipole moment in the Bestest Little Higgs model, including new Feynman rules.

Findings

Chromomagnetic dipole moment ranges from 10^{-6} to 10^{-5}.

The Standard Model Higgs boson significantly influences the results.

Introduces new Feynman rules for the model.

Abstract

We calculate the chromomagnetic dipole moment of the top quark, $\hat{\mu}_t$, in the context of the Bestest Little Higgs model. This extension of the Standard Model aims to solve the hierarchy problem without fine tuning, by introducing one-loop corrections to the Higgs boson mass through heavy top quark partners and heavy gauge bosons. We found that the largest resulting value for the chromomagnetic is $\hat{\mu}_t\sim 10^{-5}$ and the lowest is around $10^{-6}$, mainly due to the Higgs boson of the Standard Model, which couples to both the top quark of the Standard Model and its heavy partners. Also, we present a wide variety of new Feynman rules involved in our calculation.