Higgs bosons in supersymmetric model with CP-violating potential

TL;DR

This paper investigates CP-violating effects in a non-minimal supersymmetric Higgs sector with an SU(2)-triplet, revealing potential observable CP-odd decay modes of Higgs bosons that differ from standard model predictions.

Contribution

It introduces a model with an SU(2)-triplet Higgs field, analyzing how CP violation affects Higgs decay modes and polarization states, which is a novel extension of previous supersymmetric models.

Findings

The observed Higgs could decay into CP-odd photon pairs.

The second lightest Higgs has altered dominant decay modes.

Higgs decay products could have comparable CP-even and CP-odd components.

Abstract

In the supersymmetric standard model which is not minimal, the Higgs potential does not conserve CP symmetry generally. Assuming that there exists an SU(2)-triplet Higgs field, we discuss resultant CP-violating effects on the Higgs bosons. The experimentally observed Higgs boson, which should be CP-even in the standard model, could decay into two photons of CP-odd polarization state non-negligibly. For the second lightest Higgs boson, in sizable region of parameter space, the dominant decay modes are different from those expected by the standard model. The two-photon decay could yield both even and odd CP final states at a ratio of oder of unity.