Communications in Physics 23, 203-209 (2013)

VACUUM STABILITY IN SUPERSYMMETRIC REDUCED MINIMAL 3-3-1 MODEL

NGUYEN HUY THAO, LY THI MAI PHUONG, LE THO HUE

We investigate the vacuum stability conditions of the supersymmetric reduced minimal 331 model (SUSYRM331) that create important consequences on Higgs mass spectrum as well as soft-parameters of the model. We prove that if this condition is satisfied then all Higgses are massive. Furthermore, soft-parameters should be in order of SU(3)L scale. Based on this, we investigate in detail masses of CP-even neutral and doubly charged Higgses in the model. The neutral Higgs sector includes one light Higgs with mass at tree level mH0 1 ≃ mZ| cos 2 | < 92:0 GeV and three other heavy Higgses. For doubly charged Higgses, there may exist a light Higgs which can be observed by recent colliders such as LHC.

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