Search for two-neutrino double-beta decay of 136Xe to the excited state of 136Ba with the complete EXO-200 dataset
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, Journal Article
Al Kharusi, S; Anton, G; Badhrees, I; Barbeau, PS; Beck, D; Belov, V; Bhatta, T; Breidenbach, M; Brunner, T; Cao, GF; Cen, WR; Chambers, C ...
Published in: Chinese Physics C
October 1, 2023
A new search for two-neutrino double-beta (2νββ) decay of 136Xe to the excited state of 136Ba is performed with the full EXO-200 dataset. A deep learning-based convolutional neural network is used to discriminate signal from background events. Signal detection efficiency is increased relative to previous searches by EXO-200 by more than a factor of two. With the addition of the Phase II dataset taken with an upgraded detector, the median 90% confidence level half-life sensitivity of 2νββ decay to the state of 136Ba is yr using a total 136Xe exposure of 234.1 kg yr. No statistically significant evidence for 2νββ decay to the state is observed, leading to a lower limit of yr at 90% confidence level, improved by 70% relative to the current world's best constraint.
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Published In
Chinese Physics C
DOI
ISSN
1674-1137
Publication Date
October 1, 2023
Volume
47
Issue
10
Related Subject Headings
- Nuclear & Particles Physics
- 5107 Particle and high energy physics
- 5102 Atomic, molecular and optical physics
- 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
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Al Kharusi, S., Anton, G., Badhrees, I., Barbeau, P. S., Beck, D., Belov, V., … Wu, S. X. (2023). Search for two-neutrino double-beta decay of 136Xe to the excited state of 136Ba with the complete EXO-200 dataset. Chinese Physics C, 47(10). https://doi.org/10.1088/1674-1137/aceee3
Al Kharusi, S., G. Anton, I. Badhrees, P. S. Barbeau, D. Beck, V. Belov, T. Bhatta, et al. “Search for two-neutrino double-beta decay of 136Xe to the excited state of 136Ba with the complete EXO-200 dataset.” Chinese Physics C 47, no. 10 (October 1, 2023). https://doi.org/10.1088/1674-1137/aceee3.
Al Kharusi S, Anton G, Badhrees I, Barbeau PS, Beck D, Belov V, et al. Search for two-neutrino double-beta decay of 136Xe to the excited state of 136Ba with the complete EXO-200 dataset. Chinese Physics C. 2023 Oct 1;47(10).
Al Kharusi, S., et al. “Search for two-neutrino double-beta decay of 136Xe to the excited state of 136Ba with the complete EXO-200 dataset.” Chinese Physics C, vol. 47, no. 10, Oct. 2023. Scopus, doi:10.1088/1674-1137/aceee3.
Al Kharusi S, Anton G, Badhrees I, Barbeau PS, Beck D, Belov V, Bhatta T, Breidenbach M, Brunner T, Cao GF, Cen WR, Chambers C, Cleveland B, Coon M, Craycraft A, Daniels T, Darroch L, Daugherty SJ, Davis J, Delaquis S, Der Mesrobian-Kabakian A, Devoe R, Dilling J, Dolgolenko A, Dolinski MJ, Echevers J, Fairbank W, Fairbank D, Farine J, Feyzbakhsh S, Fierlinger P, Fu YS, Fudenberg D, Gautam P, Gornea R, Gratta G, Hall C, Hansen EV, Hoessl J, Hufschmidt P, Hughes M, Iverson A, Jamil A, Jessiman C, Jewell MJ, Johnson A, Karelin A, Kaufman LJ, Koffas T, Krücken R, Kuchenkov A, Kumar KS, Lan Y, Larson A, Lenardo BG, Leonard DS, Li GS, Li S, Li Z, Licciardi C, Lin YH, MacLellan R, McElroy T, Michel T, Mong B, Moore DC, Murray K, Njoya O, Nusair O, Odian A, Ostrovskiy I, Perna A, Piepke A, Pocar A, Retière F, Robinson AL, Rowson PC, Runge J, Schmidt S, Sinclair D, Skarpaas K, Soma AK, Stekhanov V, Tarka M, Thibado S, Todd J, Tolba T, Totev TI, Tsang R, Veenstra B, Veeraraghavan V, Vogel P, Vuilleumier JL, Wagenpfeil M, Watkins J, Weber M, Wen LJ, Wichoski U, Wrede G, Wu SX. Search for two-neutrino double-beta decay of 136Xe to the excited state of 136Ba with the complete EXO-200 dataset. Chinese Physics C. 2023 Oct 1;47(10).
Published In
Chinese Physics C
DOI
ISSN
1674-1137
Publication Date
October 1, 2023
Volume
47
Issue
10
Related Subject Headings
- Nuclear & Particles Physics
- 5107 Particle and high energy physics
- 5102 Atomic, molecular and optical physics
- 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics