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Generalized bounds on Majoron neutrino couplings

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Generalized bounds on Majoron neutrino couplings

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Tomàs, Ricard; Päs, Heinrich; Furtado Valle, José Wagner

Aquest document és un/a article, creat/da en: 2001

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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