Neutrino Decay in the Doublet Majoron Model

Details Neutrino Decay in the Doublet Majoron Model Neutrino Decay in the Doublet Majoron Model

1994-05-27

arxiv.org/abs/hep-ph/9405405v2

Phys.Lett. B335 (1994) 444-451

Physics

High Energy Physics

High Energy Physics - Phenomenology

(A discussion on a constraint from nucleosynthesis is revised, related references are added, the figure is corrected according

Scientific paper

10.1016/0370-2693(94)90376-X

A new Majoron model is presented within the framework of the seesaw mechanism. Its Higgs sector consists of only doublet representations and the lepton-number violation takes place at the same scale of the electroweak symmetry breaking. This model is different from the singlet- or triplet-Majoron model in several respects: it is free from the \(\rho\)-parameter constraint and it provides moderately fast neutrino decay, but the constraint from the stellar cooling of red giants is satisfied only with an imposed approximate symmetry. A \(\tau\) neutrino as heavy as 10 MeV is possible in this model despite various cosmological and astrophysical constraints.

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