Eur. Phys. J. C (2011) 71: 1693
https://doi.org/10.1140/epjc/s10052-011-1693-3

Regular Article - Theoretical Physics

Scalar potential without cubic term in 3-3-1 models without exotic electric charges

¹ Departamento de Física, Universidad de Nariño, A.A. 1175, Pasto, Colombia
² Instituto de Física, Universidad de Antioquia, A.A. 1226, Medellín, Colombia

^* e-mail: yithsbey@gmail.com
^** e-mail: yithsbey@yahoo.com

Received: 8 April 2011
Revised: 4 June 2011
Published online: 21 July 2011

Abstract

A detailed study of the criteria for stability of the scalar potential, and the proper electroweak symmetry breaking pattern in some 3-3-1 models without exotic electric charges is presented. In this paper we concentrate in a scalar sector with three Higgs scalar triplets, with a potential that does not include the cubic term, due to the presence of a discrete symmetry. For the analysis we use, and improve, a method previously developed to study the scalar potential in the two-Higgs-doublet extension of the standard model. Our main result is to show the consistency of those 3-3-1 models without exotic electric charges.