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arXiv · 2111.03180

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

J. I. Aranda·T. Cisneros-Pérez·E. Cruz-Albaro·J. Montaño-Domínguez·F. Ramírez-Zavaleta
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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.

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J. I. Aranda, T. Cisneros-Pérez, E. Cruz-Albaro, J. Montaño-Domínguez, F. Ramírez-Zavaleta. 2021-11-04. Chromomagnetic dipole moment of the top quark in the Bestest Little Higgs model. https://arxiv.org/abs/2111.03180

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