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Generalized Bounds on Majoron-neutrino couplings

R. Tomas·H. Päs·J. W. F. Valle
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Abstract

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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R. Tomas, H. Päs, J. W. F. Valle. 2001-07-25. Generalized Bounds on Majoron-neutrino couplings. https://doi.org/10.1103/physrevd.64.095005

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