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

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

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

EPJ

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2024 Impact factor 4.8

Particles and Fields

Open Access

Eur. Phys. J. C (2015) 75: 342
https://doi.org/10.1140/epjc/s10052-015-3550-2

Regular Article - Theoretical Physics

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

Vo Quoc Phong¹^*, Hoang Ngoc Long², Vo Thanh Van¹ and Le Hoang Minh¹

¹ Department of Theoretical Physics, Ho Chi Minh City University of Science, Ho Chi Minh City, Vietnam
² Institute of Physics, Vietnamese Academy of Science and Technology, 10 Dao Tan, Ba Dinh, Hanoi, Vietnam

^* e-mail: vo.quoc.phong.vl@gmail.com

Received: 8 April 2015
Accepted: 30 June 2015
Published online: 22 July 2015

Abstract

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, $SU(3) \rightarrow SU(2)$ at the TeV scale and $SU(2) \rightarrow U(1)$ at the 100 GeV scale. The EWPT $SU(3) \rightarrow SU(2)$ 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 10 $$^2$$ –10 $$^3$$ GeV. The EWPT $SU(2) \rightarrow U(1)$ is strengthened by only the new bosons; its strength is about 1–1.15 if the mass parts of $$H^0_1$$ , $H^\pm _2$ and $Y^\pm$ are in the ranges 10–10 $$^2$$ GeV. The contributions of and $H^{\pm }_2$ to the strengths of both EWPTs may make them sufficiently strong to provide large deviations from thermal equilibrium and B violation necessary for baryogenesis.