Measurement of the 2νββ decay half-life and search for the 0νββ decay of 116Cd with the NEMO-3 detector

被引:44
|
作者
Arnold, R. [1 ]
Augier, C. [2 ]
Baker, J. D. [3 ]
Barabash, A. S. [4 ]
Basharina-Freshville, A. [5 ]
Blondel, S. [2 ]
Blot, S. [6 ]
Bongrand, M. [2 ]
Boursette, D. [2 ]
Brudanin, V. [7 ,8 ]
Busto, J. [9 ]
Caffrey, A. J. [3 ]
Calvez, S. [2 ]
Cascella, M. [5 ]
Cerna, C. [10 ]
Cesar, J. P. [11 ]
Chapon, A. [12 ]
Chauveau, E. [6 ]
Chopra, A. [5 ]
Duchesneau, D. [13 ]
Durand, D. [12 ]
Egorov, V. [7 ]
Eurin, G. [2 ,5 ]
Evans, J. J. [6 ]
Fajt, L. [14 ]
Filosofov, D. [7 ]
Flack, R. [5 ]
Garrido, X. [2 ]
Gomez, H. [2 ]
Guillon, B. [12 ]
Guzowski, P. [6 ]
Hodak, R. [14 ]
Huber, A. [10 ]
Hubert, P. [10 ]
Hugon, C. [10 ]
Jullian, S. [2 ]
Klimenko, A. [7 ]
Kochetov, O. [7 ]
Konovalov, S. I. [4 ]
Kovalenko, V. [7 ]
Lalanne, D. [2 ]
Lang, K. [11 ]
Lemiere, Y. [12 ]
Le Noblet, T. [13 ]
Liptak, Z. [11 ]
Liu, X. R. [5 ]
Loaiza, P. [2 ]
Lutter, G. [10 ]
Macko, M. [10 ,15 ]
Macolino, C. [2 ]
机构
[1] ULP, CNRS IN2P3, IPHC, F-67037 Strasbourg, France
[2] Univ Paris Sud, CNRS IN2P3, LAL, F-91405 Orsay, France
[3] Idaho Natl Lab, Idaho Falls, ID 83415 USA
[4] NRC, Kurchatov Inst, ITEP, Moscow 117218, Russia
[5] UCL, London WC1E 6BT, England
[6] Univ Manchester, Manchester M13 9PL, Lancs, England
[7] JINR, Dubna 141980, Russia
[8] Natl Res Nucl Univ MEPhI, Moscow 115409, Russia
[9] Aix Marseille Univ, CNRS, CPPM, F-13009 Marseille, France
[10] Univ Bordeaux, CNRS IN2P3, CENBG, F-33175 Gradignan, France
[11] Univ Texas Austin, Austin, TX 78712 USA
[12] Univ Caen, CNRS IN2P3, ENSICAEN, LPC Caen, F-14050 Caen, France
[13] Univ Savoie Mont Blanc, CNRS IN2P3, LAPP, Annecy Le Vieux, France
[14] Czech Tech Univ, Inst Expt & Appl Phys, CZ-12800 Prague, Czech Republic
[15] Comenius Univ, FMFI, SK-84248 Bratislava, Slovakia
[16] Univ Warwick, Coventry CV4 7AL, W Midlands, England
[17] Osaka Univ, 1-1 Machikaney Arna Toyonaka, Osaka 5600043, Japan
[18] Saga Univ, Saga 8408502, Japan
[19] Lab Souterrain Modane, F-73500 Modane, France
[20] CNRS, LSCE, F-91190 Gif Sur Yvette, France
[21] Imperial Coll London, London SW7 2AZ, England
[22] Inst Univ France, F-75005 Paris, France
[23] Univ Jyvaskyla, FIN-40351 Jyvaskyla, Finland
[24] MHC, S Hadley, MA 01075 USA
[25] Inst Nucl Res, MSP, UA-03680 Kiev, Ukraine
[26] Charles Univ Prague, Fac Math & Phys, CZ-12116 Prague, Czech Republic
基金
俄罗斯基础研究基金会; 美国国家科学基金会; 英国科学技术设施理事会;
关键词
DOUBLE-BETA-DECAY; NUCLEAR-DATA SHEETS; NEUTRINO MASS; MAJORON; VALUES;
D O I
10.1103/PhysRevD.95.012007
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The NEMO-3 experiment measured the half-life of the 2 nu beta beta decay and searched for the 0 nu beta beta decay of Cd-116. Using 410 g of Cd-116 installed in the detector with an exposure of 5.26 y, (4968 +/- 74) events corresponding to the 2 nu beta beta decay of Cd-116 to the ground state of Sn-116 have been observed with a signal to background ratio of about 12. The half-life of the 2 nu beta beta decay has been measured to be T-1/2(2 nu) = [2.74 +/- 0.04(stat) +/- 0.18(syst)] x 10(19) y. No events have been observed above the expected background while searching for 0 nu beta beta decay. The corresponding limit on the half-life is determined to be T-1/2(0 nu) >= 1.0 x 10(23) y at the 90% C. L. which corresponds to an upper limit on the effective Majorana neutrino mass of < m(nu)> <= 1.4-2.5 eV depending on the nuclear matrix elements considered. Limits on other mechanisms generating 0 nu beta beta decay such as the exchange of R-parity violating supersymmetric particles, right-handed currents and majoron emission are also obtained.
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页数:12
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