Measurement of the double-beta decay half-life and search for the neutrinoless double-beta decay of <SUP>48</SUP>Ca with the NEMO-3 detector - INSU - Institut national des sciences de l'Univers Access content directly
Journal Articles Physical Review D Year : 2016

Measurement of the double-beta decay half-life and search for the neutrinoless double-beta decay of 48Ca with the NEMO-3 detector

A. M. Bakalyarov
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J. D. Baker
  • Function : Author
A. S. Barabash
  • Function : Author
A. Basharina-Freshville
  • Function : Author
S. Blot
  • Function : Author
V. Brudanin
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A. J. Caffrey
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S. Calvez
M. Cascella
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J. P. Cesar
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E. Chauveau
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A. Chopra
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V. Egorov
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J. J. Evans
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L. Fajt
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D. Filosofov
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R. Flack
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P. Guzowski
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R. Hodák
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A. Klimenko
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O. Kochetov
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S. I. Konovalov
  • Function : Author
V. Kovalenko
  • Function : Author
K. Lang
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V. I. Lebedev
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Z. Liptak
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X. R. Liu
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F. Mamedov
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B. Morgan
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J. Mott
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I. Nemchenok
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M. Nomachi
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F. Nova
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H. Ohsumi
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R. B. Pahlka
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P. Povinec
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P. Přidal
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Y. A. Ramachers
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B. Richards
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C. L. Riddle
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E. Rukhadze
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N. I. Rukhadze
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R. Saakyan
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R. Salazar
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Yu. Shitov
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F. Šimkovic
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A. Smetana
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K. Smolek
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A. Smolnikov
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S. Söldner-Rembold
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I. Štekl
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J. Suhonen
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C. S. Sutton
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J. Thomas
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V. Timkin
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S. Torre
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Vl. I. Tretyak
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V. I. Tretyak
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V. I. Umatov
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I. Vanushin
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C. Vilela
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V. Vorobel
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D. Waters
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S. V. Zhukov
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A. Žukauskas
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Abstract

The NEMO-3 experiment at the Modane Underground Laboratory investigates the double-beta decay of 48Ca. Using 5.25 yr of data recorded with a 6.99 g sample of 48Ca, approximately 150 double-beta decay candidate events are selected with a signal-to-background ratio greater than 3. The half-life for the two-neutrino double-beta decay of 48Ca is measured to be T1/2 2 ν=[6. 4-0.6+0.7(stat)-0.9 +1.2(syst ) ]×1 019 yr . A search for neutrinoless double-beta decay of 48Ca yields a null result, and a corresponding lower limit on the half-life is found to be T1/2 0 ν>2.0 ×1 022 yr at 90% confidence level, translating into an upper limit on the effective Majorana neutrino mass of ⟨mβ β⟩<6.0 - 26 eV , with the range reflecting different nuclear matrix element calculations. Limits are also set on models involving Majoron emission and right-handed currents.
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Dates and versions

insu-03721846 , version 1 (13-07-2022)

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R. Arnold, C. Augier, A. M. Bakalyarov, J. D. Baker, A. S. Barabash, et al.. Measurement of the double-beta decay half-life and search for the neutrinoless double-beta decay of 48Ca with the NEMO-3 detector. Physical Review D, 2016, 93, pp.112008. ⟨10.1103/PhysRevD.93.112008⟩. ⟨insu-03721846⟩
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