Evidence of Single State Dominance in the Two-Neutrino Double-β Decay of 82Se with CUPID-0

Azzolini, O.; Beeman, J. W.; Bellini, F.; Beretta, M.; Biassoni, M.; Brofferio, C.; Bucci, C.; Capelli, S.; Cardani, L.; Carniti, P.; Casali, N.; Chiesa, D.; Clemenza, M.; Cremonesi, O.; Cruciani, A.; Dafinei, I.; Di Domizio, S.; Ferroni, F.; Gironi, L.; Giuliani, A.; Gorla, P.; Gotti, C.; Keppel, G.; Kotila, J.; Martinez, M.; Nagorny, S.; Nastasi, M.; Nisi, S.; Nones, C.; Orlandi, D.; Pagnanini, L.; Pallavicini, M.; Pattavina, L.; Pavan, M.; Pessina, G.; Pettinacci, V.; Pirro, S.; Pozzi, S.; Previtali, E.; Puiu, A.; Rusconi, C.; Schäffner, K.; Tomei, C.; Vignati, M.; Zolotarova, A.

doi:10.1103/PhysRevLett.123.262501

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Azzolini, O., Beeman, J. W., Bellini, F., Beretta, M., Biassoni, M., Brofferio, C., Bucci, C., Capelli, S., Cardani, L., Carniti, P., Casali, N., Chiesa, D., Clemenza, M., Cremonesi, O., Cruciani, A., Dafinei, I., Di Domizio, S., Ferroni, F., Gironi, L., . . . Zolotarova, A. (2019). Evidence of Single State Dominance in the Two-Neutrino Double-β Decay of 82Se with CUPID-0. Physical Review Letters, 123(26), Article 262501. https://doi.org/10.1103/PhysRevLett.123.262501

Julkaistu sarjassa

Physical Review Letters

Tekijät

Azzolini, O. |

Beeman, J. W. |

Bellini, F. |

Beretta, M. |

Biassoni, M. |

Brofferio, C. |

Bucci, C. |

Capelli, S. |

Cardani, L. |

Carniti, P. |

Casali, N. |

Chiesa, D. |

Clemenza, M. |

Cremonesi, O. |

Cruciani, A. |

Dafinei, I. |

Di Domizio, S. |

Ferroni, F. |

Gironi, L. |

Giuliani, A. |

Gorla, P. |

Gotti, C. |

Keppel, G. |

Kotila, J. |

Martinez, M. |

Nagorny, S. |

Nastasi, M. |

Nisi, S. |

Nones, C. |

Orlandi, D. |

Pagnanini, L. |

Pallavicini, M. |

Pattavina, L. |

Pavan, M. |

Pessina, G. |

Pettinacci, V. |

Pirro, S. |

Pozzi, S. |

Previtali, E. |

Puiu, A. |

Rusconi, C. |

Schäffner, K. |

Tomei, C. |

Vignati, M. |

Zolotarova, A.

Päivämäärä

2019

Tekijänoikeudet

We report on the measurement of the two-neutrino double-β decay of 82Se performed for the first time with cryogenic calorimeters, inthe framework of theCUPID-0experiment. With anexposureof 9.95 kg yr of Zn82Se, we determine the two-neutrino double-β decay half-life of 82Se with an unprecedentedprecision level, T2ν½ = [8.60 0.03(stat)þ0.19 −0.13(syst)]× 1019 yr. The very high signal-to-background ratio, along with the detailed reconstruction of the background sources allowed us to identify the single state dominance as the underlying mechanism of such a process, demonstrating that the higher state dominance hypothesis is disfavored at the level of 5.5σ.

Julkaisija

American Physical Society

ISSN Hae Julkaisufoorumista

0031-9007

Rahoittaja(t)

Suomen Akatemia

Rahoitusohjelmat(t)

Akatemiatutkija, SA; Akatemiatutkijan tutkimuskulut, SA

Lisätietoja rahoituksesta

This work was partially supported by the European Research Council (FP7/2007-2013), Contract No. 247115. The work of J.K. was supported by the Academy of Finland (Grant No. 314733).

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Searching for New Physics in two-neutrino double beta decay with CUPID

Armatol, A.; Armengaud, E.; Armstrong, W.; Augier, C.; Avignone, F. T.; Azzolini, O.; Barabash, A.; Bari, G.; Barresi, A.; Baudin, D.; Bellini, F.; Benato, G.; Beretta, M.; Bergé, L.; Biassoni, M.; Billard, J.; Boldrini, V.; Branca, A.; Brofferio, C.; Bucci, C.; Camilleri, J.; Capelli, S.; Cappelli, L.; Cardani, L.; Carniti, P.; Casali, N.; Cazes, A.; Celi, E.; Chang, C.; Chapellier, M.; Charrier, A.; Chiesa, D.; Clemenza, M.; Colantoni, I.; Collamati, F.; Copello, S.; Cremonesi, O.; Creswick, R. J.; Cruciani, A.; Addabbo, A. D’; Imperio, G. D’; Dafinei, I.; Danevich, F. A.; de Combarieu, M.; Jesus, M. De; de Marcillac, P.; Dell’Oro, S.; Domizio, S. Di; Dompè, V.; Drobizhev, A.; Dumoulin, L.; Fantini, G.; Faverzani, M.; Ferri, E.; Ferri, F.; Ferroni, F.; Figueroa-Feliciano, E.; Formaggio, J.; Franceschi, A.; Fu, C.; Fu, S.; Fujikawa, B. K.; Gascon, J.; Ghislandi, S.; Giachero, A.; Gironi, L.; Giuliani, A.; Gorla, P.; Gotti, C.; Gras, P.; Gros, M.; Gutierrez, T. D.; Han, K.; Hansen, E. V.; Heeger, K. M.; Helis, D. L.; Huang, H. Z.; Huang, R. G.; Imbert, L.; Johnston, J.; Juillard, A.; Karapetrov, G.; Keppel, G.; Khalife, H.; Kobychev, V. V.; Kotila, J.; Kolomensky, Yu. G.; Konovalov, S.; Liu, Y.; Loaiza, P.; Ma, L.; Madhukuttan, M.; Mancarella, F.; Mariam, R.; Marini, L.; Marnieros, S.; Martinez, M.; Maruyama, R. H.; Mauri, B.; Mayer, D.; Mei, Y.; Milana, S.; Misiak, D.; Napolitano, T.; Nastasi, M.; Navick, X. F.; Nikkel, J.; Nipoti, R.; Nisi, S.; Nones, C.; Norman, E. B.; Novosad, V.; Nutini, I.; O’Donnell, T.; Olivieri, E.; Oriol, C.; Ouellet, J. L.; Pagan, S.; Pagliarone, C.; Pagnanini, L.; Pari, P.; Pattavina, L.; Paul, B.; Pavan, M.; Peng, H.; Pessina, G.; Pettinacci, V.; Pira, C.; Pirro, S.; Poda, D. V.; Polakovic, T.; Polischuk, O. G.; Pozzi, S.; Previtali, E.; Puiu, A.; Quitadamo, S.; Ressa, A.; Rizzoli, R.; Rosenfeld, C.; Rusconi, C.; Sanglard, V.; Scarpaci, J.; Schmidt, B.; Sharma, V.; Shlegel, V.; Singh, V.; Sisti, M.; Speller, D.; Surukuchi, P. T.; Taffarello, L.; Tellier, O.; Tomei, C.; Tretyak, V. I.; Tsymbaliuk, A.; Velazquez, M.; Vetter, K. J.; Wagaarachchi, S. L.; Wang, G.; Wang, L.; Welliver, B.; Wilson, J.; Wilson, K.; Winslow, L. A.; Xue, M.; Yan, L.; Yang, J.; Yefremenko, V.; Yumatov, V.; Zarytskyy, M. M.; Zhang, J.; Zolotarova, A.; Zucchelli, S. (IOP Publishing, 2021)

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