Abstract
We investigate the Higgs bosons decay width in the framework of NMSSMin the one-loop approximation. The Higgs sector under consideration contains CP-violation in the general case due to explicit and spontaneous violations of the CP-symmetry. The local minimum conditions for the Higgs bosons physical states are taken into account as necessary requirements. So, calculation of the decay width reduces to the calculation of corresponding processes amplitudes. The strategy of calculation is based on the perturbation theory.
Highlights
The Higgs sector is the main object of our research
We investigate the Higgs bosons decay width in the framework of NMSSM in the one-loop approximation
The SM contains the complex CP-violating-phase in the fundamental fermions mix matrix. This phase is not enough to explain of the baryon asymmetry
Summary
The Higgs sector is the main object of our research. The Higgs boson with mass 125 GeV is observed in the experiments at the LHC. There are researches [3, 4], in which it is considered that the vacuum is the metastable state for the Higgs boson with mass of order 125 GeV. There is a hypothesis that the baryon asymmetry appear already at an early stage of the Universe formation in the framework of process, so-called, baryogenesis. The SM contains the complex CP-violating-phase in the fundamental fermions mix matrix This phase is not enough to explain of the baryon asymmetry. The solution of this problem is the introduction of the additional Superpole chiral singlet in the Higgs sector This model is called Next-to-MSSM or NMSSM [8, 9]
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