Final results on Se-82 double beta decay to the ground state of Kr-82 from the NEMO-3 experiment

Arnold, R.; Augier, C.; Barabash, A.S.; Basharina-Freshville, A.; Blondel, S.; Blot, S.; Bongrand, M.; Boursette, D.; Brudanin, V.; Busto, J.; Caffrey, A.J.; Calvez, S.; Cascella, M.; Cerna, C.; Cesar, J.P.; Chapon, A.; Chauveau, E.; Chopra, A.; Dawson, L.; Duchesneau, D.; Durand, D.; Egorov, V.; Eurin, G.; Evans, J.J.; Fajt, L.; Filosofov, D.; Flack, R.; Garrido, X.; Gomez, H.; Guillon, B.; Guzowski, P.; Hodák, R.; Huber, A.; Hubert, P.; Hugon, C.; Jullian, S.; Klimenko, A.; Kochetov, O.; Konovalov, S.I.; Kovalenko, V.; Lalanne, D.; Lang, Kevin; Lemière, Y.; Le Noblet, T.; Liptak, Z.; Liu, X.R.; Loaiza, P.; Lutter, G.; Macolino, C.; Mamedov, F.; Marquet, C.; Mauger, F.; Morgan, B.; Mott, James E.; Nemchenok, I.; Nomachi, M.; Nova, F.; Nowacki, F.; Ohsumi, H.; Pahlka, R.B.; Patrick, C.; Perrot, F.; Piquemal, F.; Povinec, P.; Přidal, P.; Ramachers, Y.A.; Remoto, A.; Reyss, J.L.; Riddle, C.L.; Rukhadze, E.; Rukhadze, N.I.; Saakyan, R.; Salazar, R.; Sarazin, X.; Shitov, Yu.; Simard, L.; Šimkovic, F.; Smetana, A.; Smolek, K.; Smolnikov, A.; Söldner-Rembold, S.; Soulé, B.; Štekl, I.; Suhonen, J.; Sutton, C.S.; Szklarz, G.; Thomas, J.; Timkin, V.; Torre, S.; Tretyak, Vl. I.; Tretyak, V.I.; Umatov, V.I.; Vanushin, I.; Vilela, C.; Vorobel, V.; Waters, D.; Xie, F.; Žukauskas, A.

Final results on Se-82 double beta decay to the ground state of Kr-82 from the NEMO-3 experiment

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Arnold2018_Article_FinalResultsOnMathbf82HboxSe82.pdf(1.76 MB)

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Date

2018-10-11

DOI

10.1140/epjc/s10052-018-6295-x

Authors

Arnold, R.

Augier, C.

Barabash, A.S.

Basharina-Freshville, A.

Blondel, S.

Blot, S.

Bongrand, M.

Boursette, D.

Brudanin, V.

Busto, J.

URI

https://hdl.handle.net/2144/37780

OA Version

Published version

Citation

R. Arnold, C. Augier, A.S. Barabash, A. Basharina-Freshville, S. Blondel, S. Blot, M. Bongrand, D. Boursette, V. Brudanin, J. Busto, A.J. Caffrey, S. Calvez, M. Cascella, C. Cerna, J.P. Cesar, A. Chapon, E. Chauveau, A. Chopra, L. Dawson, D. Duchesneau, D. Durand, V. Egorov, G. Eurin, J.J. Evans, L. Fajt, D. Filosofov, R. Flack, X. Garrido, H. Gomez, B. Guillon, P. Guzowski, R. Hodak, A. Huber, P. Hubert, C. Hugon, S. Jullian, A. Klimenko, O. Kochetov, S.I. Konovalov, V. Kovalenko, D. Lalanne, K. Lang, Y. Lemiere, T. Le Noblet, Z. Liptak, X.R. Liu, P. Loaiza, G. Lutter, C. Macolino, F. Mamedov, C. Marquet, F. Mauger, B. Morgan, J. Mott, I. Nemchenok, M. Nomachi, F. Nova, F. Nowacki, H. Ohsumi, R.B. Pahlka, C. Patrick, F. Perrot, F. Piquemal, P. Povinec, P. Pridal, Y.A. Ramachers, A. Remoto, J.L. Reyss, C.L. Riddle, E. Rukhadze, N.I. Rukhadze, R. Saakyan, R. Salazar, X. Sarazin, Yu Shitov, L. Simard, F. Simkovic, A. Smetana, K. Smolek, A. Smolnikov, S. Soldner-Rembold, B. Soule, I. Stekl, J. Suhonen, C.S. Sutton, G. Szklarz, J. Thomas, V. Timkin, S. Torre, V.I.I. Tretyak, V.I. Tretyak, V.I. Umatov, I. Vanushin, C. Vilela, V. Vorobel, D. Waters, F. Xie, A. Zukauskas. 2018. "Final results on Se-82 double beta decay to the ground state of Kr-82 from the NEMO-3 experiment." EUROPEAN PHYSICAL JOURNAL C, Volume 78, Issue 10, pp. ? - ? (15). https://doi.org/10.1140/epjc/s10052-018-6295-x

Abstract

Using data from the NEMO-3 experiment, we have measured the two-neutrino double beta decay (2𝜈𝛽𝛽) half-life of ^82 Se as 𝑇2𝜈1/2=[9.39±0.17( stat )±0.58( syst )]×10^19 y under the single-state dominance hypothesis for this nuclear transition. The corresponding nuclear matrix element is ∣∣𝑀^2𝜈∣∣=0.0498±0.0016. In addition, a search for neutrinoless double beta decay (0𝜈𝛽𝛽) using 0.93 kg of ^82 Se observed for a total of 5.25 y has been conducted and no evidence for a signal has been found. The resulting half-life limit of 𝑇^0𝜈1/2>2.5×10^23 y (90% C.L. ) for the light neutrino exchange mechanism leads to a constraint on the effective Majorana neutrino mass of ⟨𝑚𝜈⟩<(1.2−3.0) eV , where the range reflects 0𝜈𝛽𝛽 nuclear matrix element values from different calculations. Furthermore, constraints on lepton number violating parameters for other 0𝜈𝛽𝛽 mechanisms, such as right-handed currents, majoron emission and R-parity violating supersymmetry modes have been set.

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