Search Results - "A. C. B. Machado"
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The quest for an intermediate-scale accidental axion and further ALPs
Published in The journal of high energy physics (01-06-2014)“…A bstract The recent detection of the cosmic microwave background polarimeter experiment BICEP2 of tensor fluctuations in the B-mode power spectrum basically…”
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Minimal 3-3-1 model with a spectator sextet
Published in Physical review. D, Particles, fields, gravitation, and cosmology (22-10-2015)Get full text
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Flavor-changing neutral currents in the minimal 3-3-1 model revisited
Published in Physical review. D, Particles, fields, gravitation, and cosmology (04-12-2013)“…We study a few Delta F = 2 and Delta F = 1 flavor-changing neutral current processes in the minimal 3-3-1 model by considering, besides the neutral vector…”
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Charged scalar production at the compact linear collider for the S3⊗Z2 model
Published in The European physical journal. C, Particles and fields (01-11-2020)“…We present a model with S 3 ⊗ Z 2 model plus a sterile neutrino and its phenomenological expectations for the production of charged scalars at the compact…”
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Schizophrenic active neutrinos and exotic sterile neutrinos
Published in Physics letters. B (04-04-2011)“…We implement a schizophrenic scenario for the active neutrinos in a model in which there are also exotic right-handed neutrinos making a model with a local…”
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Higgs decay rate to two photons in a model with two fermiophobic-Higgs doublets
Published in Physical review. D, Particles, fields, gravitation, and cosmology (22-02-2013)“…We consider a three Higgs doublet model with an S sub(3) symmetry in which beside the standard model-like doublet, there are two fermiophobic doublets. Due to…”
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Quasi-Dirac neutrinos and solar neutrino data
Published in The European physical journal. C, Particles and fields (01-10-2013)“…We will present an analysis of the solar neutrino data in the context of a 3+1 quasi-Dirac neutrino model in which the lepton mixing matrix is given at tree…”
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The flavor problem and discrete symmetries
Published in Physics letters. B (20-04-2009)“…In this Letter we propose a multi-Higgs extension of the standard model with Abelian and non-Abelian discrete symmetries in which the mass matrices of the…”
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Natural Flavour Conservation in a three Higg-doublet Model
Published 15-01-2016“…Annal of Physics 364, 53-67 (2016) We consider an extension of the standard model (SM) with three $SU(2)$ scalar doublets and a discrete $S_3\otimes…”
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Charged scalar production at the compact linear collider for the $$S_3 \otimes \mathbb {Z}_2$$ model
Published in The European physical journal. C, Particles and fields (01-11-2020)“…Abstract We present a model with $$S_3 \otimes \mathbb {Z}_2$$ S 3 ⊗ Z 2 model plus a sterile neutrino and its phenomenological expectations for the production…”
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Charged scalar production at the compact linear collider for the $$S_3 \otimes \mathbb {Z}_2$$ S 3 ⊗ Z 2 model
Published in The European physical journal. C, Particles and fields (01-11-2020)“…Abstract We present a model with $$S_3 \otimes \mathbb {Z}_2$$ S 3 ⊗ Z 2 model plus a sterile neutrino and its phenomenological expectations for the production…”
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Charged scalar production at the compact linear collider for the [Formula omitted] model
Published in The European physical journal. C, Particles and fields (01-11-2020)“…We present a model with [Formula omitted] model plus a sterile neutrino and its phenomenological expectations for the production of charged scalars at the…”
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The Higgs boson in the minimal 3-3-1 model
Published 07-03-2018“…In this paper we present the mass matrices and mass eigenstates for the CP-even neutral scalars in the minimal 331 model (m331) and its self-interactions,…”
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A model with two inert scalar doublets
Published in Annals of physics (01-01-2016)“…We consider an extension of the standard model (SM) with three SU(2) scalar doublets and discrete S3⊗Z2 symmetries. The irreducible representation of S3 has a…”
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15
Lepton masses and mixing in a scotogenic model
Published 26-05-2017“…We consider an extension of the standard model with three Higgs doublet model and $S_3\times \mathbb{Z}_2$ discrete symmetries. Two of the scalar doublets are…”
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Lepton masses and mixing in a scotogenic model
Published in Physics letters. B (10-04-2020)“…We consider an extension of the standard model with three Higgs doublets and S3×Z2 discrete symmetries. Two of the scalar doublets are inert due to the S3…”
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The Higgs boson in the minimal 3-3-1 model
Published in Physics letters. B (10-09-2018)“…In this paper we present an analytic solution for the mass matrix of the CP-even neutral scalars in the minimal 331 model (m331), identifying the Standard…”
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18
FCNC in the minimal 3-3-1 model revisited
Published 11-12-2013“…We show that in the minimal 3-3-1 model the flavor changing neutral currents (FCNCs) do not impose necessarily strong constraints on the mass of the $Z^\prime$…”
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19
Quasi-Dirac neutrinos and solar neutrino data
Published 23-10-2013“…We present an analysis of the solar neutrino data in the context of a quasi-Dirac neutrino model in which the lepton mixing matrix is given at tree level by…”
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Schizophrenic active neutrinos and exotic sterile neutrinos
Published 17-03-2011“…Phys.Lett.B698:128-130,2011 We implement a schizophrenic scenario for the active neutrinos in a model in which there are also exotic right-handed neutrinos…”
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