First Result on the Neutrinoless Double-β Decay of 82Se with CUPID-0

被引：90

作者：

Azzolini, O. ^{[1
]}

Barrera, M. T. ^{[1
]}

Beeman, J. W. ^{[2
]}

Bellini, F. ^{[3
,4
]}

Beretta, M. ^{[5
,6
]}

Biassoni, M. ^{[6
]}

Brofferio, C. ^{[5
,6
]}

Bucci, C. ^{[7
]}

Canonica, L. ^{[7
]}

Capelli, S. ^{[5
,6
]}

Cardani, L. ^{[4
,8
]}

Carniti, P. ^{[5
,6
]}

Casali, N. ^{[4
]}

Cassina, L. ^{[5
,6
]}

Clemenza, M. ^{[5
,6
]}

Cremonesi, O. ^{[6
]}

Cruciani, A. ^{[4
]}

D'Addabbo, A. ^{[7
]}

Dafinei, I. ^{[4
]}

Di Domizio, S. ^{[9
,10
]}

Ferroni, F. ^{[3
,4
]}

Gironi, L. ^{[5
,6
]}

Giuliani, A. ^{[11
,12
]}

Gorla, P. ^{[7
]}

Gotti, C. ^{[5
,6
]}

Keppel, G. ^{[1
]}

Marini, L. ^{[9
,10
]}

Martinez, M. ^{[3
,4
]}

Morganti, S. ^{[4
]}

Nagorny, S. ^{[7
,13
]}

Nastasi, M. ^{[5
,6
]}

Nisi, S. ^{[7
]}

Nones, C. ^{[14
]}

Orlandi, D. ^{[7
]}

Pagnanini, L. ^{[7
,13
]}

Pallavicini, M. ^{[9
,10
]}

Palmieri, V. ^{[1
]}

Pattavina, L. ^{[7
,13
]}

Pavan, M. ^{[5
,6
]}

Pessina, G. ^{[6
]}

Pettinacci, V. ^{[4
]}

Pirro, S. ^{[7
]}

Pozzi, S. ^{[5
,6
]}

Previtali, E. ^{[6
]}

Puiu, A. ^{[5
,6
]}

Reindl, F. ^{[4
]}

Rusconi, C. ^{[7
,15
]}

Schaffner, K. ^{[7
,13
]}

Tomei, C. ^{[4
]}

Vignati, M. ^{[4
]}

机构：

[1] Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, Pd, Italy

[2] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

[3] Sapienza Univ Roma, Dipartimento Fis, Ple Aldo Moro 2, I-00185 Rome, Italy

[4] Ist Nazl Fis Nucl, Sez Roma, Ple Aldo Moro 2, I-00185 Rome, Italy

[5] Univ Milano Bicocca, Dipartimento Fis, I-20126 Milan, Italy

[6] Ist Nazl Fis Nucl, Sez Milano Bicocca, I-20126 Milan, Italy

[7] Ist Nazl Fis Nucl, Lab Nazl Gran Sasso, I-67100 Assergi, AQ, Italy

[8] MIT, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[9] Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy

[10] Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy

[11] CSNSM, CNRS, F-91405 Orsay, France

[12] Univ Insubria, DISAT, I-22100 Como, Italy

[13] Gran Sasso Sci Inst, I-67100 Laquila, Italy

[14] Univ Paris Saclay, CEA, IRFU, F-91191 Gif Sur Yvette, France

[15] Univ South Carolina, Dept Phys & Astron, Columbia, SC 29208 USA

来源：

PHYSICAL REVIEW LETTERS | 2018年 / 120卷 / 23期

基金：

欧洲研究理事会;

关键词：

RESPONSE STABILIZATION; HALF-LIFE; BOLOMETERS; SEARCH; DETECTORS; SIGNALS; VALUES;

D O I：

10.1103/PhysRevLett.120.232502

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the result of the search for neutrinoless double beta decay of Se-82 obtained with CUPID-0, the first large array of scintillating (ZnSe)-Se-82 cryogenic calorimeters implementing particle identification. We observe no signal in a 1.83 kg yr 82Se exposure, and we set the most stringent lower limit on the 0 nu beta beta 82Se half-life T-1/2(0 nu) > 2.4 x 10(24) yr (90% credible interval), which corresponds to an effective Majorana neutrino mass m beta beta < (376-770) meV depending on the nuclear matrix element calculations. The heat-light readout provides a powerful tool for the rejection of a particles and allows us to suppress the background in the region of interest down to (3.6(-1.4)(+1.9)) x 10(-3) counts / (keV kg yr), an unprecedented level for this technique.

引用

页数：6

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