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Closing the SU(3)(L)circle times U(1)(X) symmetry at the electroweak scale

dc.contributor.authorDias, Alex G.
dc.contributor.authorMontero, J. C.
dc.contributor.authorPleitez, V.
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T14:06:45Z
dc.date.available2014-05-20T14:06:45Z
dc.date.issued2006-06-01
dc.description.abstractWe show that some models with SU(3)(C)circle times SU(3)(L)circle times U(1)(X) gauge symmetry can be realized at the electroweak scale and that this is a consequence of an approximate global SU(2)(L+R) symmetry. This symmetry implies a condition among the vacuum expectation value of one of the neutral Higgs scalars, the U(1)(X)'s coupling constant, g(X), the sine of the weak mixing angle sin theta(W), and the mass of the W boson, M-W. In the limit in which this symmetry is valid it avoids the tree level mixing of the Z boson of the standard model with the extra Z(') boson. We have verified that the oblique T parameter is within the allowed range indicating that the radiative corrections that induce such a mixing at the 1-loop level are small. We also show that a SU(3)(L+R) custodial symmetry implies that in some of the models we have to include sterile (singlets of the 3-3-1 symmetry) right-handed neutrinos with Majorana masses, since the seesaw mechanism is mandatory to obtain light active neutrinos. Moreover, the approximate SU(2)(L+R)subset of SU(3)(L+R) symmetry implies that the extra nonstandard particles of these 3-3-1 models can be considerably lighter than it had been thought before so that new physics can be really just around the corner.en
dc.description.affiliationUniv São Paulo, Inst Fis, BR-05315970 São Paulo, Brazil
dc.description.affiliationUniv Estadual Paulista, Inst Fis Teor, BR-01405000 São Paulo, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Inst Fis Teor, BR-01405000 São Paulo, Brazil
dc.format.extent15
dc.identifierhttp://dx.doi.org/10.1103/PhysRevD.73.113004
dc.identifier.citationPhysical Review D. College Pk: American Physical Soc, v. 73, n. 11, 15 p., 2006.
dc.identifier.doi10.1103/PhysRevD.73.113004
dc.identifier.fileWOS000238698300022.pdf
dc.identifier.issn1550-7998
dc.identifier.lattes6783433390235727
dc.identifier.orcid0000-0001-5279-8438
dc.identifier.urihttp://hdl.handle.net/11449/23443
dc.identifier.wosWOS:000238698300022
dc.language.isoeng
dc.publisherAmerican Physical Soc
dc.relation.ispartofPhysical Review D
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.titleClosing the SU(3)(L)circle times U(1)(X) symmetry at the electroweak scaleen
dc.typeArtigo
dcterms.licensehttp://publish.aps.org/authors/transfer-of-copyright-agreement
dcterms.rightsHolderAmerican Physical Soc
dspace.entity.typePublication
unesp.author.lattes6783433390235727
unesp.author.orcid0000-0002-5457-9359[2]
unesp.author.orcid0000-0003-4882-938X[1]
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Física Teórica (IFT), São Paulopt

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