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Limits on neutrino-less double beta decay of100Mo

Authors
Journal
Nuclear Physics A
0375-9474
Publisher
Elsevier
Publication Date
Volume
611
Issue
1
Identifiers
DOI: 10.1016/s0375-9474(96)00332-6
Keywords
  • Astrophysics
Disciplines
  • Physics

Abstract

Abstract Exclusive measurements of neutrino-less double beta decays (0νββ) of 100Mo were made by means of ELEGANT V. Most stringent lower limits on the half-lives for the ground-state transition were obtained for the 0νββ processes as T 1 2 0ν(m ν) > 5.2 × 10 22 y , T 1 2 0ν(λ) > 3.9 × 10 22 y and T 1 2 0ν(η) > 5.1 × 10 22 y , for the mass term 〈 m ν 〉, for the right-handed current terms of 〈λ〉 and 〈η〉, respectively, and as T 1 2 0νB > 5.4 × 10 21 y for the process (0νββB) followed by a Majoron (B). These limits lead to the upper limits of 〈 m ν 〉 < 2.2 eV, 〈 λ〉 < 3.7 × 10 −6, 〈 η〉 < 2.5 × 10 −8 and 〈 g B 〉 < 7.3 × 10 −5 with g B being the coupling of B with the neutrino field. Limits on other possible processes beyond the standard theory are discussed.

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