A. Pilaftsis, ASTROPHYSICAL AND TERRESTRIAL CONSTRAINTS ON SINGLET MAJORON MODELS, Physical review. D. Particles and fields, 49(5), 1994, pp. 2398-2404
The general Lagrangian containing the couplings of the Higgs scalars t
o Majorana neutrinos is presented in the context of singlet Majoron mo
dels with intergenerational mixings. The analytical expressions for th
e coupling of the Majoron field to charged fermions are derived within
these models. Astrophysical considerations imply severe restrictions
on the parameters of the three-generation Majoron model if the Dirac n
eutrino mass matrix of the model follows a mass hierarchical pattern d
ictated by grand unified theories. Bounds that originate from analyzin
g possible charged lepton-violating decays in terrestrial experiments
are also discussed. In particular, we find that experimental searches
for muon decays by Majoron emission cannot generally be precluded by a
strophysical requirements.