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Search for Neutrinoless Double-beta Decay with the Complete EXO-200 DatasetHighly Cited Paper

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Title
Search for Neutrinoless Double-beta Decay with the Complete EXO-200 Dataset
Author(s)
Jewell, MJ; Gornea, R; Lan, Y; Njoya, O; Vogel, P; Dilling, J; Feyzbakhsh, S; Daugherty, SJ; Chambers, C; Krucken, R; Tarka, M; Totev, TI; Brunner, T; Craycraft, A; McElroy, T; Todd, J; Hoessl, J; Runge, J; Yang, L; Retiere, F; Iverson, A; Davis, J; Fairbank, D; Ostrovskiy, I; DeVoe, R; Odian, A; Nusair, O; Cleveland, B; Weber, M; Mong, B; Breidenbach, M; Belov, V; Tolba, T; Dolinski, MJ; Johnson, A; Wichoski, U; Wagenpfeil, M; Hall, C; Badhrees, I; Fierlinger, P; Kuchenkov, A; Watkins, J; Mesrobian-Kabakian, AD; Stekhanov, V; Murray, K; Cao, GF; Gratta, G; Karelin, A; Wen, LJ; Lin, YH; Schmidt, S; Li, S; Gautam, P; Licciardi, C; Beck, D; Dolgolenko, A; Jessiman, C; Yen, YR; Koffas, T; Ziegler, T; Yahne, DR; Li, Z; Danilov, M; Kumar, KS; Michel, T; Darroch, L; Larson, A; Hansen, EV; Piepke, A; Soma, AK; Veeraraghavan, V; MacLellan, R; Echevers, J; Jamil, A; Sinclair, D; Vuilleumier, JL; Pocar, A; Leonard Douglas; Li, GS; Anton, G; Hughes, M; Fudenberg, D; Wu, SX; Xia, Q; Fairbank, W; Daniels, T; Robinson, AL; Coon, M; Farine, J; Cen, WR; Kaufman, LJ; Zeldovich, OY; Hufschmidt, P; Barbeau, PS; Wrede, G; Veenstra, B; Ruddell, D; Bhatta, T; Delaquis, S; Rowson, PC; Lenardo, BG; Moore, DC
Publication Date
2019-10
Journal
PHYSICAL REVIEW LETTERS, v.123, no.16
Publisher
AMER PHYSICAL SOC
Abstract
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. C,Published by the American Physical Society
URI
https://pr.ibs.re.kr/handle/8788114/6833
DOI
10.1103/PhysRevLett.123.161802
ISSN
0031-9007
Appears in Collections:
Center for Underground Physics(지하실험 연구단) > 1. Journal Papers (저널논문)
Files in This Item:
PhysRevLett.123.161802_0.pdfDownload

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