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Physical Review D

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Two-photon decay of the Higgs bosons in a supersymmetric model with a $C P$ -violating potential

Noriyuki Oshimo

Department of Physics, Ochanomizu University, Tokyo 112-8610, Japan

Phys. Rev. D 93, 095017 – Published 23 May, 2016

DOI: https://doi.org/10.1103/PhysRevD.93.095017

Abstract

In the supersymmetric standard model which is not minimal, the Higgs potential does not conserve $C P$ symmetry generally. Assuming that there exists an SU(2)-triplet Higgs field, we discuss resultant $C P$ -violating effects on the Higgs bosons. The experimentally observed Higgs boson, which should be $C P$ even in the standard model, could decay into two photons of $C P$ -odd polarization state non-negligibly. For the second lightest Higgs boson, in a 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 $C P$ final states at a ratio of the order of unity.

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