SUSY Extended Higgs Sector and SUSY Strong Dynamics

TL;DR

This paper explores an extended SUSY Higgs sector derived from a strongly-coupled gauge theory, predicting observable deviations in Higgs properties and enabling a strongly first order electroweak phase transition for baryogenesis.

Contribution

It introduces a novel SUSY Higgs extension from strong dynamics, linking it to electroweak baryogenesis and testable Higgs property deviations.

Findings

Large radiative corrections induce a strongly first order electroweak phase transition.

Significant deviations in Higgs triple coupling and diphoton decay rate are predicted.

Model's predictions are testable at the International Linear Collider (ILC).

Abstract

We consider an extended Higgs sector that arises as a low-energy description of a strongly-coupled SUSY gauge theory. This model predicts the presence of extra superfields that couple with the Higgs superfields through large coupling constants. Large radiative corrections involving the extra fields can realize strongly first order electroweak phase transition, which is a vital requirement for electroweak baryogenesis scenario. At the same time, the large radiative corrections lead to significant deviations in the Higgs boson triple coupling and Higgs-to-diphoton branching ratio, which are testable at the ILC.