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Geração de massa para neutrinos ativos na presença de 1 ou 2 neutrinos estéreis
(Universidade Estadual Paulista (Unesp), 2007-04-20)
This work presents a study on the changes we have done in the Standard Model (SM), adding mass to neutrinos, in order to observe the alterations these changes may cause to the whole Electroweak Standard Model (ESM). ...
Is the LHC observing the pseudoscalar state of a two-Higgs-doublet model?
(2012-05-21)
The ATLAS and CMS collaborations have recently shown data suggesting the presence of a Higgs boson in the vicinity of 125 GeV. We show that a two-Higgs-doublet model spectrum, with the pseudoscalar state being the lightest, ...
Electroweak scale neutrinos and decaying dark matter
(2014)
The effect of the organochlorinated insecticide endosulfan, on the cytotoxic activity of Nile tilapia nonspecific cytotoxic cells (NCC) was assessed. Juvenile Nile tilapia were exposed to endosulfan (7ppb) for 96h and ...
Decay width Z1 → ll : effects of the little Higgs modelDecay width Z1 → ll : effects of the little Higgs model
(Revista Mexicana de Física, 2011)
Calculable lepton masses, seesaw relations, and four neutrino mixings in a 3-3-1 model with an extra U(1) symmetry
(American Physical Soc, 2014)
Neutrino phenomenology in a little higgs model with gauge symmetry $SU(3)_c\otimes SU(4)_L\otimes U(1)_X$
(2013-06-27)
Abstract: We carry out a search for possible mechanisms that explain the smallness of neutrino masses in the context of an anomaly-free Little Higgs model with electroweak gauge symmetry SU (4) L U (1) X. By the introduction ...
Measurement of inclusive jet cross-sections and search for resonances decaying into a photon and a jet
(2018-06-11)
Inclusive jet cross-sections are measured in proton-proton collisions at a centre-of-mass energy of 13 TeV.<br />The measurement uses a dataset with an integrated luminosity of 3.2 fb-1 recorded in 2015 with the ATLAS ...
O potencial efetivo a temperatura finita no modelo padrão
(Universidade Federal de Minas GeraisBrasilICX - DEPARTAMENTO DE FÍSICAPrograma de Pós-Graduação em FísicaUFMG, 2023-02-28)
The theory of elementary particles has symmetries, spontaneously broken by scalar fields when they develop a vacuum expectation value different from zero at the minimum of the effective potential. So, as the universe cools, ...