Precise determination of the mass difference sup 76 Ge- sup 76 Se and a derived upper limit on the mass for the electron neutrino

Journal Article · Mon Sep 23 04:00:00 EDT 1991 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.67.1708· OSTI ID:5218706

Hykawy, J G; Nxumalo, J N; Unger, P P; Lander, C A; Barber, R C; Sharma, K S; Peters, R D; Duckworth, H E ^[1]

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1. Department of Physics, University of Manitoba, Winnipeg, Manitoba (Canada)

Recent improvements to both the instrumentation and data-analysis techniques associated with the Manitoba II high-resolution mass spectrometer have led to greater precision and accuracy. The mass difference between {sup 76}Ge and {sup 76}Se has been redetermined to be 2038.56(32) keV. When this new {ital Q} value is used to reexamine recent spectra reported by groups searching for the characteristic sharp peak expected for neutrinoless double-beta decay, no evidence for the occurrence of such a decay is found. New upper limits can be derived for the electron-neutrino mass.

• OSTI ID: 5218706
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 67:13; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

651620* -- Nuclear Properties & Reactions
A=59-89
Experimental
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BETA DECAY
BETA-MINUS DECAY
DECAY
DOUBLE BETA DECAY
ELECTRON NEUTRINOS
ELEMENTARY PARTICLES
EVEN-EVEN NUCLEI
FERMIONS
GERMANIUM 76
GERMANIUM ISOTOPES
INTERMEDIATE MASS NUCLEI
ISOTOPES
LEPTONS
LIMITING VALUES
MASS
MASS DIFFERENCE
MASSLESS PARTICLES
NEUTRINOS
NUCLEAR DECAY
NUCLEI
PARTICLE PROPERTIES
SELENIUM 76
SELENIUM ISOTOPES
STABLE ISOTOPES