Search for the double-beta decay of 82Se to the excited states of 82Kr with NEMO-3

Arnold, R.; Augier, C.; Barabash, A. S.; Basharina-Freshville, A.; Blondel, S.; Blot, S.; Bongrand, M.; Boursette, D.; Breier, R.; 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.; Girard-Carillo, C.; Gomez, H.; Guillon, B.; Guzowski, P.; Hodak, R.; Huber, A.; Hubert, P.; Hugon, C.; Jullian, S.; Klimenko, A.; Kochetov, O.; Konovalov, S. I.; Kovalenko, V.; Lalanne, D.; Lang, K.; Lemiere, Y.; Le Noblet, T.; Liptak, Z.; Liu, X. R.; Loaiza, P.; Lutter, G.; Macko, M.; Macolino, C.; Mamedov, F.; Marquet, C.; Mauger, F.; Minotti, A.; Morgan, B.; Mott, J.; Nemchenok, I.; Nomachi, M.; Nova, F.; Nowacki, F.; Ohsumi, H.; Oliviero, G.; Pahlka, R. B.; Palusova, V.; Patrick, C.; Perrot, F.; Pin, A.; Piquemal, F.; Povinec, P.; Pridal, P.; Ramachers, Y. A.; Remoto, A.; Reyss, J. L.; Richards, B.; Riddle, C. L.; Rukhadze, E.; Saakyan, R.; Salazar, R.; Sarazin, X.; Sedgbeer, J.; Shitov, Y.; Simard, L.; Simkovic, F.; Smetana, A.; Smolek, K.; Smolnikov, A.; Soldner-Rembold, S.; Soule, B.; Stekl, I.; Suhonen, J.; Sutton, C. S.; Szklarz, G.; Tedjditi, H.; Thomas, J.; Timkin, V.; Torre, S.; Tretyak, V. I.; Tretyak, V. I.; Umatov, V. I.; Vanushin, I.; Vilela, C.; Vorobel, V.; Waters, D.; Xie, F.; Zukauskas, A.

doi:10.1016/j.nuclphysa.2020.121701

The double-beta decay of 82Se to the 01+ excited state of 82Kr has been studied with the NEMO-3 detector using 0.93 kg of enriched 82Se measured for 4.75 y, corresponding to an exposure of 4.42 kg⋅y. A dedicated analysis to reconstruct the γ-rays has been performed to search for events in the 2e2γ channel. No evidence of a 2νββ decay to the 01+ state has been observed and a limit of T1/22ν(Se82,0gs+→01+)>1.3×1021y at 90% CL has been set. Concerning the 0νββ decay to the 01+ state, a limit for this decay has been obtained with T1/20ν(Se82,0gs+→01+)>2.3×1022y at 90% CL, independently from the 2νββ decay process. These results are obtained for the first time with a tracko-calo detector, reconstructing every particle in the final state.

Titolo:	Search for the double-beta decay of 82Se to the excited states of 82Kr with NEMO-3
Autori:	Arnold R. Augier C. Barabash A. S. Basharina-Freshville A. Blondel S. Blot S. Bongrand M. Boursette D. Breier R. 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. Girard-Carillo C. Gomez H. Guillon B. Guzowski P. Hodak R. Huber A. Hubert P. Hugon C. Jullian S. Klimenko A. Kochetov O. Konovalov S. I. Kovalenko V. Lalanne D. Lang K. Lemiere Y. Le Noblet T. Liptak Z. Liu X. R. Loaiza P. Lutter G. Macko M. MACOLINO, Carla Mamedov F. Marquet C. Mauger F. Minotti A. Morgan B. Mott J. Nemchenok I. Nomachi M. Nova F. Nowacki F. Ohsumi H. Oliviero G. Pahlka R. B. Palusova V. Patrick C. Perrot F. Pin A. Piquemal F. Povinec P. Pridal P. Ramachers Y. A. Remoto A. Reyss J. L. Richards B. Riddle C. L. Rukhadze E. Saakyan R. Salazar R. Sarazin X. Sedgbeer J. Shitov Y. Simard L. Simkovic F. Smetana A. Smolek K. Smolnikov A. Soldner-Rembold S. Soule B. Stekl I. Suhonen J. Sutton C. S. Szklarz G. Tedjditi H. Thomas J. Timkin V. Torre S. Tretyak V. I. Tretyak V. I. Umatov V. I. Vanushin I. Vilela C. Vorobel V. Waters D. Xie F. Zukauskas A. mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2020
Rivista:	NUCLEAR PHYSICS. A
Handle:	http://hdl.handle.net/11697/166454
Appare nelle tipologie:	1.1 Articolo in rivista

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