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Vector meson mixing and charge symmetry violation
(1996-03-07)
We discuss the consistency of the traditional vector meson dominance (VMD) model for photons coupling to matter, with the vanishing of vector meson-meson and meson-photon mixing self-energies at q2 = 0. This vanishing of ...
Vector meson mixing and charge symmetry violation
(1996-03-07)
We discuss the consistency of the traditional vector meson dominance (VMD) model for photons coupling to matter, with the vanishing of vector meson-meson and meson-photon mixing self-energies at q2 = 0. This vanishing of ...
Comments on regularization ambiguities and local gauge symmetries
(World Scientific Publ Co Pte Ltd, 2005-08-20)
We study the regularization ambiguities in an exact renormalized (1 + 1)-dimensional field theory. We show a relation between the regularization ambiguities and the coupling parameters of the theory as well as their role ...
Three-Higgs-doublet model with A(4) symmetry
(Elsevier B.V., 2011-03-14)
We worked out in detail the three-Higgs-doublet extension of the standard model when the A(4) symmetry, which is imposed to solve the flavor problem, is extended to the scalar sector. The three doublets may be related to ...
ON FERMION MASSES and MIXING IN A MODEL WITH A(4) SYMMETRY
(World Scientific Publ Co Pte Ltd, 2012-05-10)
In a recently proposed multi-Higgs extension of the standard model in which discrete symmetries, A(4) and Z(3) are imposed we show that, after accommodating the fermion masses and the mixing matrices in the charged currents, ...
Gravitation and the local symmetry group of space-time
(Kluwer Academic/plenum Publ, 2002-04-01)
According to general relativity, the interaction of a matter field with gravitation requires the simultaneous introduction of a tetrad field, which is a field related to translations, and a spin connection, which is a field ...
The flavor problem and discrete symmetries
(Elsevier B.V., 2009-04-20)
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 charged fermions obtained from renormalizable interactions are ...
Gauging U(1) symmetries and the number of right-handed neutrinos
(Elsevier B.V., 2009-05-04)
In this Letter we consider that assuming: (a) that the only left-handed neutral fermions are the active neutrinos, (b) that B - L is a gauge symmetry, and (c) that the L assignment is restricted to the integer numbers, the ...
Soliton spectrum of integrable models with local symmetries
(2002-07-01)
The soliton spectrum (massive and massless) of a family of integrable models with local U(1) and U(1) ⊗U(1) symmetries is studied. These models represent relevant integrable deformations of SL(2,ℝ) ⊗U(1) n-1-WZW and SL(2,ℝ) ...
Quark clustering and chiral symmetry breaking in nuclear matter
(World Scientific Publ Co Pte Ltd, 2003-10-20)
Chiral symmetry breaking at finite baryon density is usually discussed in the context of quark matter, i.e. a system of deconfined quarks. Many systems like stable nuclei and neutron stars however have quarks confined ...