Two-neutrino double-β decay measurement of Mo 100
1995; American Physical Society; Volume: 51; Issue: 5 Linguagem: Inglês
10.1103/physrevd.51.2090
ISSN1538-4500
AutoresD. Dassié, R. Eschbach, F. Hubert, Ph. Hubert, M. C. Perillo Isaac, C. Izac, F. Leccia, P. Mennrath, A. Vareille, C. Longuemare, F. Mauger, F. A. Danevich, V. N. Kouts, V.I. Tretyak, Yu. Vassilyev, Yu.G. Zdesenko, A. S. Barabash, V.N. Kornoukov, Yu.B. Lepikhin, V. I. Umatov, I. Vanushin, C. Augier, D. Blum, J.E. Campagne, S. Jullian, D. Lalanne, F. Laplanche, F. Natchez, Grégoire Pichenot, G. Szklarz, R. Arnold, J.L. Guyonnet, T. Lamhamdi, I. Linck, F. Piquemal, F. Scheibling, V. Brudanin, V. Egorov, O. Kochetov, A. Nozdrin, Ts. Vylov, Sh. Zaparov, H. Nicholson, C.S. Sutton,
Tópico(s)Muon and positron interactions and applications
ResumoFrom data accumulated over 6140 h with 172 g of enriched molybdenum (1.18 mol yr of 100Mo) with the NEMO 2 detector in the Fréjus Underground Laboratory, a clear ββ2ν signal (1433 events) is observed, leading to a half-life T1/2=0.95±0.04(stat)±0.09(syst) 1019 yr. The experimental two-electron energy spectrum and the two-electron angular distribution are in agreement with the expected ones. Limits for ββ0ν decays to the ground state, excited states (2+1 and 0+1), and also with Majoron emission are given.Received 29 June 1994DOI:https://doi.org/10.1103/PhysRevD.51.2090©1995 American Physical Society
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