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Scalar Sector of 331 Models Without Exotic Electric Charges

Giraldo, Yithsbey (2013) Scalar Sector of 331 Models Without Exotic Electric Charges. Technical Report. Vicerrectoría de Investigaciones, Postgrados y Relaciones Internacionales, Colombia. (Unpublished)


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In this work, we study the minimal set of Higgs scalars, for models based on the local gauge group SU(3)c⊗SU(3)L⊗U(1)X which do not contain particles with exotic electric charges. We show that only two Higgs SU(3)L triplets are needed in order to properly break the symmetry. The exact tree-level scalar mass matrices resulting from symmetry breaking are calculated at the minimum of the most general scalar potential, and the gauge bosons are obtained, together with their coupling to the physical scalar fields. We show how the scalar sector introduced is enough to produce masses for fermions in a particular model which is an E 6 subgroup. By using experimental results we constraint the scale of new physics to be above 1.3 TeV. Also, a detailed study of the criteria for stability of the scalar potential and the proper electroweak symmetry breaking pattern in the economical 331 model, is presented. 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 (SM). A new theorem 2related to the stability of the potential is stated. As a consequence of this study, the consistency of the economical 331 model emerges. Additionally, 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. Our main result is to show the consistency of those 331 models without exotic electric charges.

Tipo de Elemento: Monografía (Technical Report)
Asunto: Q Ciencias > QC Physics
Division: Facultad de Ciencias Exactas y Naturales > Programa de Física > Productividad
Depósito de Usuario: Prof. Yithsbey / Y. Giraldo
Fecha Deposito: 06 Feb 2018 22:08
Ultima Modificación: 06 Feb 2018 22:08

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