Bounds on new Majoron models from the Heidelberg-Moscow experiment

Journal Article · Sun Sep 01 00:00:00 EDT 1996 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.54.3641· OSTI ID:383416

Guenther, M; Hellmig, J; Heusser, G; Hirsch, M; Klapdor-Kleingrothaus, H V; Maier, B; Paes, H; Petry, F; Ramachers, Y; Strecker, H; Voellinger, M ^[1]; Balysh, A; Belyaev, S T; Demehin, A; Gurov, A; Kondratenko, I; Kotelnikov, D; Lebedev, V I ^[2]; Mueller, A ^[3]

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1. Max-Planck-Institut fuer Kernphysik, P.O. Box 10 39 80, D-69029 Heidelberg (Germany)
2. Russian Science Center Kurchatov Institute, 123 182 Moscow (Russia)
3. Istituto Nazionale di Fisica Nucleare, I-67010 Assergi (Italy)

In recent years several new Majoron models were invented to avoid the shortcomings of the ordinary 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 {sup 76}Ge Heidelberg-Moscow experiment. While stringent half-life limits for all decay modes and the coupling constants of the ordinary models were obtained, small matrix elements and phase space integrals result in much weaker limits on the effective coupling constants of the new Majoron models. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 383416
• Journal Information: Physical Review, D, Vol. 54, Issue 5; Other Information: PBD: Sep 1996
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
DOUBLE BETA DECAY
MAJORANA THEORY
HALF-LIFE
EMISSION
NEUTRINOS
COUPLING
COUPLING CONSTANTS
PHASE SPACE