Bounds on new Majoron models from the Heidelberg-Moscow-Experiment

Abstract

In recent years several new Majoron models were invented to avoid shortcomings of the classical models while leading to observable decay rates in double beta experiments. We give the first experimental half life bounds on double beta decays with new Majoron emission and derive bounds on the effective neutrino--Majoron couplings from the data of the ${}^{76}Ge$ HEIDELBERG--MOSCOW experiment. While stringent half life limits for all decay modes and the coupling constants of the classical models were obtained, small matrix elements and phase space integrals \cite{hir95,pae95} result in much weaker limits on the effective coupling constants of the new Majoron models.

arXiv comment8 pages, postscript encoded as uu-file

References in corpus (6)

• Observable Majoron Emission in Neutrinoless Double Beta Decay
• On the observability of Majoron emitting double beta decays
• Majorons Without Majorana Masses and Neutrinoless Double Beta Decay
• Multi-Majoron Modes for Neutrinoless Double-Beta Decay
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Cited by in corpus (13)

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• Results on $\beta \beta$ decay with emission of two neutrinos or Majorons in ${}^{76}$Ge from GERDA Phase I
• Majoron Dark Matter and Constraints on the Majoron-Neutrino Coupling
• Limits on different Majoron decay modes of ${}^{100}$Mo and ${}^{82}$Se for neutrinoless double beta decays in the NEMO-3 experiment
• Neutrino Anti-neutrino Transitions
• Phase space factors and half-life predictions for Majoron emitting ${\beta }^{-}{\beta }^{-}$ decay
• Neutrino Decay and Neutrinoless Double Beta Decay in a 3-3-1 Model
• Neutrinoless double beta decay with and without Majoron-like boson emission in a 3-3-1 model
• Majoron emitting neutrinoless double beta decay in the electroweak chiral gauge extensions
• Search for New Physics with Neutrinoless Double Beta Decay