Analysis and interpretation of a large body of /sup 76/Ge zero-neutrino double-. beta. -decay data

Journal Article · Sun Mar 01 04:00:00 EST 1987 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.35.1713· OSTI ID:6836935

Miley, H S; Brodzinski, R L; Reeves, J H

Data from five recent /sup 76/Ge double-..beta..-decay experiments were combined in a single spectrum equivalent to counting for 0.4 yr with 1770-cm/sup 3/ fiducial volume of Ge. The composite spectrum was analyzed using an approximate analytical form of the likelihood function. The maximum likelihood 68%-C.L. values for the half-life and Majorana ..nu.. mass are T/sup O//sup v//sub 1//sub ///sub 2/(/sup 76/Ge)approx. >4.1 x 10/sup 23/ yr and approx. <2.4 eV, respectively, when accounting for the slight depression in the spectrum, and 2.4 x 10/sup 23/ yr and approx. <3.2 eV when neglecting the depression. It is clearly demonstrated that experiments with current levels of background will soon reach their point of diminishing returns.

• Research Organization: Department of Physics and Astronomy, University of South Carolina, Columbia, South Carolina 29208
• OSTI ID: 6836935
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 35:5; ISSN PRVDA
• Country of Publication: United States
• Language: English

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A=59-89
Experimental
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BETA DECAY
BETA-MINUS DECAY
DECAY
DOUBLE BETA DECAY
ELEMENTARY PARTICLES
EVEN-EVEN NUCLEI
FERMIONS
GERMANIUM 76
GERMANIUM ISOTOPES
HALF-LIFE
INTERMEDIATE MASS NUCLEI
ISOTOPES
LEPTONS
MASS
MASSLESS PARTICLES
MAXIMUM-LIKELIHOOD FIT
NEUTRINOS
NUCLEI
NUMERICAL SOLUTION
STABLE ISOTOPES