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Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/56409
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dc.creatorAlex Gomes Diaspt_BR
dc.creatorJúlio Rafael da Silva Leitept_BR
dc.creatorBruce Lehmann Sánchez Vegapt_BR
dc.creatorWilliam de Carvalho Vieirapt_BR
dc.date.accessioned2023-07-17T17:53:45Z-
dc.date.available2023-07-17T17:53:45Z-
dc.date.issued2020-
dc.citation.volume102pt_BR
dc.citation.issue1pt_BR
dc.citation.spage015021-1pt_BR
dc.citation.epage015021-18pt_BR
dc.identifier.doihttps://doi.org/10.1103/PhysRevD.102.015021pt_BR
dc.identifier.issn2470-0029pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/56409-
dc.description.resumoWe propose an extension of the Standard Model (SM) based on the SUð3ÞC ⊗ SUð3ÞL ⊗ Uð1ÞX (3-3-1) gauge symmetry and scale invariance. Maintaining the main features of the so-called 3-3-1 models, such as the cancellation of gauge anomalies related to the number of chiral fermion generations, this model exhibits a very compact scalar sector. Only two scalar triplets and one singlet are necessary and sufficient to break the symmetries dynamically via the Coleman-Weinberg mechanism. With the introduction of an Abelian discrete symmetry and assuming a natural hierarchy among the vacuum expectation values of the neutral scalar fields, we show that all particles in the model can get phenomenologically consistent masses. In particular, most of the standard fermion masses are generated via a seesaw mechanism involving some extra heavy fermions introduced for consistency. This mechanism provides a partial solution for the fermion mass hierarchy problem in the SM. Furthermore, the simplicity of the scalar sector allows us to analytically find the conditions for the potential stability up to one-loop level and show how they can be easily satisfied. Some of the new particles, such as the scalars H, H and all the non-SM vector bosons, are predicted to get masses around the TeV scale and, therefore, could be produced at the high-luminosity LHC. Finally, we show that the model features a residual symmetry, which leads to the stability of a heavy neutral particle; the latter is expected to show up in experiments as missing energy.pt_BR
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológicopt_BR
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superiorpt_BR
dc.description.sponsorshipFAPESP - Fundação de Amparo à Pesquisa do Estado de São Paulopt_BR
dc.format.mimetypepdfpt_BR
dc.languageengpt_BR
dc.publisherUniversidade Federal de Minas Geraispt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentICX - DEPARTAMENTO DE FÍSICApt_BR
dc.publisher.initialsUFMGpt_BR
dc.relation.ispartofPhysical Review D-
dc.rightsAcesso Abertopt_BR
dc.subjectDynamical symmetry breaking modelspt_BR
dc.subjectExtensions of Higgs sectorpt_BR
dc.subjectExtensions of fermion sectorpt_BR
dc.subjectExtensions of gauge sectorpt_BR
dc.subjectHypothetical particle physics modelspt_BR
dc.subjectConformal symmetrypt_BR
dc.subject.otherSimetriapt_BR
dc.titleDynamical symmetry breaking and fermion mass hierarchy in the scale-invariant 3-3-1 modelpt_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://journals.aps.org/prd/abstract/10.1103/PhysRevD.102.015021pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-4882-938Xpt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-8584-8259pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-6735-5813pt_BR
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