The Hierarchy Problem and the Top Yukawa

TL;DR

This paper proposes an alternative solution to the hierarchy problem by reducing the top Yukawa coupling at high scales, predicting new top-philic particles instead of traditional top partners, with testable implications in top physics measurements.

Contribution

It introduces a novel approach to the hierarchy problem by mitigating the top Yukawa coupling, leading to new top-philic particles and distinct phenomenological signatures.

Findings

Mitigating the top Yukawa coupling addresses the hierarchy problem.

Predicted new top-philic particles at the cutoff scale.

Testable effects in top physics measurements like $t\bar{t}h$ and $t\bar{t}t\bar{t}$ cross sections.

Abstract

In this talk, an alternative to top partner solutions and its consequences on phenomenology are discussed. The hierarchy problem from the top loop contribution is solved by mitigating the top Yukawa coupling at high scales. In this scenario, the new degrees of freedom appearing at the cut-off scale of the top loop should then be some new top-philic particles instead of traditional top partners. The idea can be directly tested through measurements in top physics, including $t\bar{t}h$, $t\bar{t}$ differential cross section, and $t\bar{t}t\bar{t}$ cross section.