Search for Neutrinoless Double-β Decay with the Complete EXO-200 Dataset.

G Anton,I Badhrees,P S Barbeau,D Beck,V Belov,T Bhatta,M Breidenbach,T Brunner,G F Cao,W R Cen,C Chambers,B Cleveland,M Coon,A Craycraft,T Daniels,M Danilov,L Darroch,S J Daugherty,J Davis,S Delaquis,A Der Mesrobian-Kabakian,R DeVoe,J Dilling,A Dolgolenko,M J Dolinski,J Echevers,W Fairbank,D Fairbank,J Farine,S Feyzbakhsh,P Fierlinger,D Fudenberg,P Gautam,R Gornea,G Gratta,C Hall,E V Hansen,J Hoessl,P Hufschmidt,M Hughes,A Iverson,A Jamil,C Jessiman,M J Jewell,A Johnson,A Karelin,L J Kaufman, T Koffas,R Krücken,A Kuchenkov,K S Kumar,Y Lan,A Larson,B G Lenardo,D S Leonard,G S Li,S Li,Z Li,C Licciardi,Y H Lin,R MacLellan,T McElroy,T Michel,B Mong,D C Moore,K Murray,O Njoya,O Nusair,A Odian,I Ostrovskiy,A Piepke,A Pocar,F Retière,A L Robinson,P C Rowson,D Ruddell,J Runge,S Schmidt,D Sinclair,A K Soma,V Stekhanov,M Tarka, J Todd,T Tolba,T I Totev, B Veenstra, V Veeraraghavan,P Vogel,J-L Vuilleumier, M Wagenpfeil,J Watkins,M Weber, L J Wen, U Wichoski,G Wrede,S X Wu, Q Xia,D R Yahne,L Yang,Y-R Yen,O Ya Zeldovich,T Ziegler

PHYSICAL REVIEW LETTERS（2019）

引用 107|浏览3

暂无评分

摘要

A search for neutrinoless double-beta decay (0 nu beta beta) in Xe-136 is performed with the full EXO-200 dataset using a deep neural network to discriminate between 0 nu beta beta and background events. Relative to previous analyses, the signal detection efficiency has been raised from 80.8% to 96.4 +/- 3.0%, and the energy resolution of the detector at the Q value of Xe-136 0 nu beta beta has been improved from sigma/E = 1.23% to 1.15 +/- 0.02% with the upgraded detector. Accounting for the new data, the median 90% confidence level 0 nu beta beta half-life sensitivity for this analysis is 5.0 x 10(25) yr with a total Xe-136 exposure of 234.1 kg yr. No statistically significant evidence for 0 nu beta beta is observed, leading to a lower limit on the 0 nu beta beta half-life of 3.5 x 10(25) yr at the 90% confidence level.

查看译文

AI 理解论文

溯源树

样例

生成溯源树，研究论文发展脉络

Chat Paper

正在生成论文摘要