Dynamically induced spontaneous symmetry breaking in 3-3-1 models
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Data
2005-08-11
Autores
Dias, A. G.
Pires, CAS
Pleitez, V
da Silva, PSR
Título da Revista
ISSN da Revista
Título de Volume
Editor
Elsevier B.V.
Resumo
We show that in SU(3)(C) circle times SU(3)(L) circle times U(1)(N) (3-3-1) models embedded with a singlet scalar playing the role of the axion, after imposing scale invariance, the breaking of Peccei-Quinn symmetry occurs through the one-loop effective potential for the singlet field. We, then, analyze the structure of spontaneous symmetry breaking by studying the new scalar potential for the model, and verify that electroweak symmetry breaking is tightly connected to the 3-3-1 breaking by the strong constraints among their vacuum expectation values. This offers a valuable guide to write down the correct pattern of symmetry breaking for multi-scalar theories. We also obtained that the accompanying massive pseudo-scalar, instead of acquiring mass of order of Peccei-Quinn scale as we would expect, develops a mass at a much lower scale, a consequence solely of the breaking via Coleman-Weinberg mechanism. (c) 2005 Published by Elsevier B.V.
Descrição
Palavras-chave
effective potential, 3-3-1 model, spontaneous symmetry breaking
Como citar
Physics Letters B. Amsterdam: Elsevier B.V., v. 621, n. 1-2, p. 151-159, 2005.