Generalized Bounds on Majoron-neutrino couplings

Details Generalized Bounds on Majoron-neutrino couplings Generalized Bounds on Majoron-neutrino couplings

2001-03-01

arxiv.org/abs/hep-ph/0103017v2

Phys.Rev.D64:095005,2001

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pages, LateX, 7 figures, version to be published in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.64.095005

We discuss limits on neutrino-Majoron 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 seesaw-type scheme or via radiative corrections. By adopting a general framework including CP phases we generalize bounds obtained previously. The combination of complementary bounds enables us to obtain a highly non-trivial exclusion region in the parameter space. We find that the future double beta project GENIUS, together with constraints based on supernova energy release arguments, could restrict neutrino-Majoron couplings down to the 10^{-7} level.

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