| Literature DB >> 31702371 |
G Anton1, I Badhrees2, P S Barbeau3, D Beck4, V Belov5, T Bhatta6, M Breidenbach7, T Brunner8,9, G F Cao10, W R Cen10, C Chambers11, B Cleveland12, M Coon4, A Craycraft11, T Daniels13, M Danilov5, L Darroch8, S J Daugherty14, J Davis7, S Delaquis7, A Der Mesrobian-Kabakian12, R DeVoe15, J Dilling9, A Dolgolenko5, M J Dolinski16, J Echevers4, W Fairbank11, D Fairbank11, J Farine12, S Feyzbakhsh17, P Fierlinger18, D Fudenberg15, P Gautam16, R Gornea2,9, G Gratta15, C Hall19, E V Hansen16, J Hoessl1, P Hufschmidt1, M Hughes20, A Iverson11, A Jamil21, C Jessiman2, M J Jewell15, A Johnson7, A Karelin5, L J Kaufman7, T Koffas2, R Krücken9, A Kuchenkov5, K S Kumar22, Y Lan9, A Larson6, B G Lenardo15, D S Leonard23, G S Li15, S Li4, Z Li21, C Licciardi12, Y H Lin16, R MacLellan6, T McElroy8, T Michel1, B Mong7, D C Moore21, K Murray8, O Njoya22, O Nusair20, A Odian7, I Ostrovskiy20, A Piepke20, A Pocar17, F Retière9, A L Robinson12, P C Rowson7, D Ruddell13, J Runge3, S Schmidt1, D Sinclair2,9, A K Soma20, V Stekhanov5, M Tarka17, J Todd11, T Tolba10, T I Totev8, B Veenstra2, V Veeraraghavan20, P Vogel24, J-L Vuilleumier25, M Wagenpfeil1, J Watkins2, M Weber15, L J Wen10, U Wichoski12, G Wrede1, S X Wu15, Q Xia21, D R Yahne11, L Yang4, Y-R Yen16, O Ya Zeldovich5, T Ziegler1.
Abstract
A search for neutrinoless double-β decay (0νββ) in ^{136}Xe is performed with the full EXO-200 dataset using a deep neural network to discriminate between 0νββ 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 ^{136}Xe 0νββ has been improved from σ/E=1.23% to 1.15±0.02% with the upgraded detector. Accounting for the new data, the median 90% confidence level 0νββ half-life sensitivity for this analysis is 5.0×10^{25} yr with a total ^{136}Xe exposure of 234.1 kg yr. No statistically significant evidence for 0νββ is observed, leading to a lower limit on the 0νββ half-life of 3.5×10^{25} yr at the 90% confidence level.Year: 2019 PMID： 31702371 DOI： 10.1103/PhysRevLett.123.161802
Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161