Investigating Bottom-Quark Yukawa Interaction at Higgs Factory

TL;DR

This paper explores how future electron-positron colliders can precisely measure the bottom-quark Yukawa interaction to detect potential deviations from the Standard Model, providing insights into new physics beyond current theories.

Contribution

It demonstrates the potential of future colliders to investigate the Lorentz structure of the bottom-quark Yukawa interaction, highlighting its role in new physics searches.

Findings

Feasibility of measuring bottom-quark Yukawa coupling at future colliders.

Sensitivity to deviations in the Lorentz structure of Yukawa interactions.

Implications for detecting new physics models.

Abstract

Measuring the fermion Yukawa coupling constants is important for understanding the origin of the fermion masses and its relationship to the spontaneously electroweak symmetry breaking. On the other hand, some new physics models will change the Lorentz structure of the Yukawa interactions between the standard model (SM) fermions and the SM-like Higgs boson even in their decoupling limit. Thus the precisely measurement of the fermion Yukawa interactions is a powerful tool of new physics searching in the decoupling limit. In this work, we show the possibility of investigating the Lorentz structure of the bottom-quark Yukawa interaction with the 125GeV SM-like Higgs boson at future $e^+e^-$ colliders.