Search of the neutrino-less double beta decay of 82 Se into the excited states of 82 Kr with CUPID-0.

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作者：Azzolini O, Barrera M T, Beeman J W, Bellini F, Beretta M, Biassoni M, Bossio E, Brofferio C, Bucci C, Canonica L, Capelli S, Cardani L, Carniti P, Casali N, Cassina L, Clemenza M, Cremonesi O, Cruciani A, D'Addabbo A, Dafinei I, Domizio S Di, Ferroni F, Gironi L, Giuliani A, Gorla P, Gotti C, Keppel G, Martinez M, Morganti S, Nagorny S, Nastasi M, Nisi S, Nones C, Orlandi D, Pagnanini L, Pallavicini M, Palmieri V, 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
期刊：European Physical Journal C影响因子：4.800
时间：2018起止号：2018;78(11):888
doi：10.1140/epjc/s10052-018-6340-9
The CUPID-0 experiment searches for double beta decay using cryogenic calorimeters with double (heat and light) read-out. The detector, consisting of 24 ZnSe crystals 95 % enriched in 82 Se and two natural ZnSe crystals, started data-taking in 2017 at Laboratori Nazionali del Gran Sasso. We present the search for the neutrino-less double beta decay of 82 Se into the 0 1+ , 2 1+ and 2 2+ excited states of 82 Kr with an exposure of 5.74 kg  ·  yr (2.24  ×  10 25  emitters  ·  yr). We found no evidence of the decays and set the most stringent limits on the widths of these processes: Γ ( 82 Se →82 Kr 01+ )8.55  ×  10 -24  yr -1 , Γ ( 82 Se →82 Kr 21+ )  <  6.25  ×  10-24  yr -1 , Γ ( 82 Se →82 Kr 22+ )8.25  ×  10 -24  yr -1 (90 % credible interval).

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