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Double beta decay of 100Mo

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Abstract

Two-neutrino double beta decay of 100Mo with half-life T 1/2=[7.2±0.9(stat)± 1.8(syst)]×1018 yr was detected using a liquid argon ionization chamber. With a C.L. of 68% (90%), the bounds on neutrinoless decay and decay with majoron emission were found to be 8.4(4.9)×1021 and 4.1(3.2)×1020 yr, respectively. An analysis of all available results provides the average “world” value T 1/2=(8.0±0.7)×1018 yr for the two-neutrino decay of 100Mo, and the corresponding nuclear matrix element is M GT=0.118±0.005.

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Translated from Pis’ma v Zhurnal Éksperimental’no\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) i Teoretichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Fiziki, Vol. 74, No. 11, 2001, pp. 601–604.

Original Russian Text Copyright © 2001 by Ashitkov, Barabash, Belogurov, Carugno, Konovalov, Massera, Puglierin, Saakyan, Stekhanov, Umatov.

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Ashitkov, V.D., Barabash, A.S., Belogurov, S.G. et al. Double beta decay of 100Mo. Jetp Lett. 74, 529–531 (2001). https://doi.org/10.1134/1.1450283

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