Investigation of the Majoron-accompanied double-beta decay mode of [sup 76]Ge

Journal Article · Mon May 10 04:00:00 EDT 1993 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.70.2853· OSTI ID:6770992

Beck, M; Bensch, F; Bockholt, J; Heusser, G; Hirsch, M; Klapdor-Kleingrothaus, H V; Maier, B; Petry, F; Piepke, A; Strecker, H; Voellinger, M; Zuber, K; Balysh, A; Belyaev, S T; Demehin, A; Gurov, A; Kondratenko, I; Lebedev, V I; Mueller, A ^[1]

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1. Max-Planck-Institut fuer Kernphysik, P.O. Box 103980, 6900 Heidelberg (Germany) Kurchatov Institute, Moscow (Russian Federation) LNGS, Istituto Nazionale di Fisica Nucleare, Gran Sasso, Assergi (Italy)

We have examined the double-beta decay mode accompanied by Majoron emission. After 223 days of measurement corresponding to about 615 kg d or 19.3 mol yr of exposure we find a lower half-life limit for this decay channel of [ital T][sub 1/2][sup 0[nu][chi]][gt]1.66(1.99)[times]10[sup 22] yr [90% (68%) C.L.] yielding a new limit for the Majoron-neutrino coupling of [l angle][ital g][sub [nu][chi]][r angle][lt]1.8[times]10[sup [minus]4] (90% C.L.).

• OSTI ID: 6770992
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 70:19; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BETA DECAY
BETA-MINUS DECAY
BOSONS
DAYS LIVING RADIOISOTOPES
DECAY
DOUBLE BETA DECAY
ELECTRON NEUTRINOS
ELEMENTARY PARTICLES
EVEN-EVEN NUCLEI
FERMIONS
GERMANIUM 76
GERMANIUM ISOTOPES
GOLDSTONE BOSONS
HALF-LIFE
INTERMEDIATE MASS NUCLEI
ISOTOPES
LEPTONS
LIMITING VALUES
MAJORANA THEORY
MASS
MASSLESS PARTICLES
NEUTRINOS
NUCLEAR DECAY
NUCLEI
POSTULATED PARTICLES
RADIOISOTOPES
STABLE ISOTOPES
YEARS LIVING RADIOISOTOPES