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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References
H.V. Klapdor-Kleingrothaus and A. Staudt, Non-accelerator Particle Physics (Institute of Physics Publ., Bristol, 1995; Nauka, Moscow, 1997).
A. Faessler and F. Simkovic, J. Phys. G 24, 2139 (1998).
H. V. Klapdor-Kleingrothaus, in Proceedings of 5th International WEIN Symposium on Physics Beyond the Standard Model, Ed. by P. Herczeg, C. M. Hoffman, and H. V. Klapdor-Kleingrothaus (World Scientific, Singapore, 1999), p. 275.
Y. Fukuda, T. Hayakawa, E. Ichihara, et al., Phys. Rev. Lett. 81, 1562 (1998).
Q. R. Ahmad, R. C. Allen, T. C. Andersen, et al., Phys. Rev. Lett. 87, 071301 (2001).
S. Stoica and H. V. Klapdor-Kleingrothaus, Nucl. Phys. A 694, 269 (2001).
A. S. Barabash, Pis’ma Zh. Éksp. Teor. Fiz. 68, 3 (1998) [JETP Lett. 68, 1 (1998)].
A. S. Barabash, Eur. Phys. J. A 8, 137 (2000).
J. Suhonen and O. Civitarese, Phys. Rep. 309, 123 (1998).
F. Simkovic, G. Pantis, J. D. Vergados, and A. Faessler, Phys. Rev. C 60, 055502 (1999).
H. Ejiri, K. Fushimi, T. Kamada, et al., Phys. Lett. B 258, 17 (1991).
S. R. Elliot, A. A. Hahn, and M. K. Moe, J. Phys. G 17, S145 (1991).
D. Dassie, R. Eschbach, F. Hubert, et al., Phys. Rev. D 51, 2090 (1995).
M. Alston-Garnjost, B. L. Dougherty, R. W. Kenney, et al., Phys. Rev. C 55, 474 (1997).
A. De Silva, M. K. Moe, M. A. Nelson, and M. A. Vient, Phys. Rev. C 56, 2451 (1997).
V. D. Ashitkov, A. S. Barabash, S. G. Belogurov, et al., Yad. Fiz. 61, 1002 (1998) [Phys. At. Nucl. 61, 910 (1998)].
V. D. Ashitkov, A. S. Barabash, S. G. Belogurov, et al., Nucl. Phys. B (Proc. Suppl.) 70, 233 (1999).
V. D. Ashitkov, A. S. Barabash, S. G. Belogurov, et al., Yad. Fiz. 62, 2217 (1999) [Phys. At. Nucl. 62, 2044 (1999)].
S. I. Vasil’ev et al., Pis’ma Zh. Éksp. Teor. Fiz. 51, 550 (1990) [JETP Lett. 51, 622 (1990)].
Particle Data Group, Eur. Phys. J. C 15, 10 (2000).
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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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DOI: https://doi.org/10.1134/1.1450283