利用CUPID-0探测器寻找硒到氪激发态的无中微子双β衰变。
Search of the neutrino-less double beta decay of Se into the excited states of Kr with CUPID-0.
作者信息
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
机构信息
1INFN, Laboratori Nazionali di Legnaro, 35020 Legnaro, Padova Italy.
2Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720 USA.
出版信息
Eur Phys J C Part Fields. 2018;78(11):888. doi: 10.1140/epjc/s10052-018-6340-9. Epub 2018 Nov 1.
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 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 Se into the 0 , 2 and 2 excited states of Kr with an exposure of 5.74 kg yr (2.24 10 emitters yr). We found no evidence of the decays and set the most stringent limits on the widths of these processes: ( Se Kr )8.55 10 yr , ( Se Kr ) yr , ( Se Kr )8.25 10 yr (90 credible interval).
CUPID-0实验使用具有双读出（热量和光）的低温量热计来搜索双β衰变。该探测器由24个富集硒的ZnSe晶体和两个天然ZnSe晶体组成，于2017年在大萨索国家实验室开始采集数据。我们展示了对硒无中微子双β衰变到氪的0 、2 和2 激发态的搜索，曝光量为5.74千克·年（2.24×10 发射体·年）。我们没有发现衰变的证据，并对这些过程的宽度设定了最严格的限制：（硒→氪）8.55×10 年 ，（硒→氪） 年 ，（硒→氪）8.25×10 年 （90%可信区间）。
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