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Radiative corrections to neutrinomajoron couplings ∗
, 1995
"... It is claimed that radiative corrections maintain the proportionality between the neutrino mass and the neutrinomajoron coupling and never give rise to enhanced decay rates in conventional majoron models. The coupling of a majoron to neutrinos is calculated at one loop level in various models, incl ..."
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It is claimed that radiative corrections maintain the proportionality between the neutrino mass and the neutrinomajoron coupling and never give rise to enhanced decay rates in conventional majoron models. The coupling of a majoron to neutrinos is calculated at one loop level in various models
Revising limits on neutrinomajoron couplings, Phys. Rev. D75
, 2007
"... Any theory that have a global spontaneously broken symmetry will imply the existence of very light neutral bosons or massless bosons (sometimes called Majorons). For most of these models we have neutrinoMajoron couplings, that appear as additional branching ratios in decays of mesons and leptons. H ..."
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Cited by 3 (0 self)
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Any theory that have a global spontaneously broken symmetry will imply the existence of very light neutral bosons or massless bosons (sometimes called Majorons). For most of these models we have neutrinoMajoron couplings, that appear as additional branching ratios in decays of mesons and leptons
Generalized bounds on majoron neutrino couplings, Phys. Rev. D64
, 2001
"... We discuss limits on neutrinoMajoron couplings both from laboratory experiments as well as from astrophysics. They apply to the simplest class of Majoron models which covers a variety of possibilities where neutrinos acquire mass either via a seesawtype scheme or via radiative corrections. By adop ..."
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We discuss limits on neutrinoMajoron couplings both from laboratory experiments as well as from astrophysics. They apply to the simplest class of Majoron models which covers a variety of possibilities where neutrinos acquire mass either via a seesawtype scheme or via radiative corrections
ON SINGLET MAJORON MODELS
, 1993
"... The general Lagrangian containing the couplings of the Higgs scalars to Majorana neutrinos is presented in the context of singlet Majoron models with intergenerational mixings. The analytical expressions for the coupling of the Majoron field to fermions are derived within these models. Astrophysical ..."
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The general Lagrangian containing the couplings of the Higgs scalars to Majorana neutrinos is presented in the context of singlet Majoron models with intergenerational mixings. The analytical expressions for the coupling of the Majoron field to fermions are derived within these models
MAJORON DECAY IN MATTER
, 1994
"... It is well known that the matter can significantly alter the picture of neutrino oscillation [1] or neutrino decay [2]. Here we show that the presence of dense matter induces also the decay of massless majoron, a Goldstone boson associated with the spontaneous lepton number violation, into a couple ..."
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It is well known that the matter can significantly alter the picture of neutrino oscillation [1] or neutrino decay [2]. Here we show that the presence of dense matter induces also the decay of massless majoron, a Goldstone boson associated with the spontaneous lepton number violation, into a couple
Primordial Nucleosynthesis, Majorons and Heavy Tau Neutrinos
, 1996
"... We determine the restrictions imposed by primordial nucleosynthesis upon a heavy tau neutrino, in the presence of ντ annihilations into Majorons, present in a wide class of particle physics models of neutrino mass. We display these cosmological limits as functions of mντ and the ντ ντ Majoron coupli ..."
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We determine the restrictions imposed by primordial nucleosynthesis upon a heavy tau neutrino, in the presence of ντ annihilations into Majorons, present in a wide class of particle physics models of neutrino mass. We display these cosmological limits as functions of mντ and the ντ ντ Majoron
Primordial nucleosynthesis, majorons and heavy tau neutrinos
, 1997
"... We determine the restrictions imposed by primordial nucleosynthesis upon a heavy tau neutrino, in the presence of ~, ~ annihilations into majorons, as expected in a wide class of particle physics models of neutrino mass. We determine the equivalent umber of light neutrino species Neq as a function o ..."
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of m,, and the v~vrmajoron coupling. We show that for theoretically plausible g values ~> 104 present nucleosynthesis observations can not rule out v ~ masses in the MeV range. Moreover, these models give Neq ~< 3 in the v ~ mass region 110 MeV, for very reasonable values of g/> 3 × 10
MultiMajoron Modes for
, 1995
"... We construct two new classes of models for double beta decay, each of which leads to an electron spectrum which differs from the decays which are usually considered. One of the classes has a spectrum which has not been considered to date, and which is softer than the usual twoneutrino decay of the ..."
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We construct two new classes of models for double beta decay, each of which leads to an electron spectrum which differs from the decays which are usually considered. One of the classes has a spectrum which has not been considered to date, and which is softer than the usual twoneutrino decay of the Standard Model. We construct illustrative models to show how other phenomenological bounds can be accommodated. We typically find that, although all other bounds can be satisfied, the predicted doublebeta decay rate only in one class of these models is at best large enough to be just detectable in current experiments.
Constraints on Majoron Models, Neutrino Masses
, 1993
"... We derive strong contraints on the Yukawa couplings and the vacuum expectation value in the singlet majoron model, taking into account the possibility of a small gravitationally induced mass for the majoron. If the present baryon asymmetry was created earlier than at the electroweak phase transition ..."
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We derive strong contraints on the Yukawa couplings and the vacuum expectation value in the singlet majoron model, taking into account the possibility of a small gravitationally induced mass for the majoron. If the present baryon asymmetry was created earlier than at the electroweak phase
Results 1  10
of
973