• Rapid Communication

Half-life limits on the zero-neutrino and two-neutrino double-β decay of Ge76

D. O. Caldwell, R. M. Eisberg, D. M. Grumm, D. L. Hale, M. S. Witherell, F. S. Goulding, D. A. Landis, N. W. Madden, D. F. Malone, R. H. Pehl, and A. R. Smith
Phys. Rev. D 33, 2737(R) – Published 1 May 1986
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Abstract

Data obtained from four Ge detectors in an active NaI shield yield a maximum-likelihood 68%-C.L. lower limit of 2.5×1023 yr for the half-life of the 0+0+ transition, and 5×1022 yr for the 0+2+ transition, for zero-neutrino double-β decay of Ge76. They also set a 90%-C.L. lower limit of 8×1019 yr for the two-neutrino decay, and 6×1020 yr for the mode in which a light boson (Majoron) is emitted with no neutrinos. These results are used to set limits on light and very heavy neutrino masses, on Majoron-neutrino coupling, and on right-handed currents.

  • Received 20 November 1985

DOI:https://doi.org/10.1103/PhysRevD.33.2737

©1986 American Physical Society

Authors & Affiliations

D. O. Caldwell, R. M. Eisberg, D. M. Grumm, D. L. Hale, and M. S. Witherell

  • Physics Department, University of California, Santa Barbara, California 93106

F. S. Goulding, D. A. Landis, N. W. Madden, D. F. Malone, R. H. Pehl, and A. R. Smith

  • Lawrence Berkeley Laboratory, Berkeley, California 94720

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Vol. 33, Iss. 9 — 1 May 1986

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