Lepton conservation in the double $beta$ decay of $sup 82$Se

Journal Article · Mon Sep 22 00:00:00 EDT 1975 · Phys. Rev. Lett., v. 35, no. 12, pp. 757-760

OSTI ID:4156087

Cleveland, B T; Leo, W R; Wu, C S; Kasday, L R; Rushton, A M; Gollon, P J; Ullman, J D

An experimental investigation of the lepton-nonconserving neutrinoless double $beta$ decay of $sup 82$Se is reported. The half-life of this decay mode is found to be greater than 3.1times10$sup 21$ yr at a 68% confidence level. By use of the reported total lifetime of $sup 82$Se obtained from recent mass- spectrometric measurements, an upper limit of 9% on the branching ratio for neutrinoless decay is estimated. This corresponds to an upper bound of approx.3times10$sup -4$ for the lepton-nonconservation amplitude if a two-nucleon mechanism is assumed.

• Research Organization: Department of Physics, Columbia University, New York, New York 10027
• NSA Number: NSA-33-004396
• OSTI ID: 4156087
• Journal Information: Phys. Rev. Lett., v. 35, no. 12, pp. 757-760, Journal Name: Phys. Rev. Lett., v. 35, no. 12, pp. 757-760; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

*LEPTON NUMBER-- CONSERVATION LAWS
*SELENIUM 82-- BETA-MINUS DECAY
642602*
BRANCHING RATIO
HALF-LIFE
KRYPTON 82
N68621* --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
59 <= A <= 89--Radioactive Decay