European Physical Journal C 75, 342 (2015)

ISSN: 1434-6044, SCI

Electroweak phase transition in the economical 3-3-1 model

Vo Quoc Phong, Hoang Ngoc Long, Vo Thanh Van, Le Hoang Minh

We consider the EWPT in the economical 3-3-1 (E331) model. Our analysis shows that the EWPT in the model is a sequence of two first-order phase transitions, SU(3) → SU(2) at the TeV scale and SU(2) → U(1) at the 100 GeV scale. The EWPT SU(3) → SU(2) is triggered by the new bosons and the exotic quarks; its strength is about 1–13 if the mass ranges of these new particles are 102–103 GeV. TheEWPT SU(2) →U(1) is strengthened by only the new bosons; its strength is about 1–1.15 if the mass parts of H0 1 , H± 2 and Y± are in the ranges 10–102 GeV. The contributions of H0 1 and H± 2 to the strengths of both EWPTs may make them sufficiently strong to provide large deviations from thermal equilibrium and B violation necessary for baryogenesis.

DOI: 10.1140/epjc/s10052-015-3550-2

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