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Search for Majoron-emitting modes of Xe 136 double beta decay with the complete EXO-200 dataset

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Title
Search for Majoron-emitting modes of Xe 136 double beta decay with the complete EXO-200 dataset
Author(s)
Al, Kharusi S.; Anton, G.; Badhrees, I.; Barbeau, P.S.; Beck, D.; Belov, V.; Bhatta, T.; Breidenbach, M.; Brunner, T.; Cao, G.F.; Cen, W.R.; Chambers, C.; Cleveland, B.; Coon, M.; Craycraft, A.; Daniels, T.; Darroch, L.; Daugherty, S.J.; Davis, J.; Delaquis, S.; Der, Mesrobian-Kabakian A.; Devoe, R.; Dilling, J.; Dolgolenko, A.; Dolinski, M.J.; Echevers, J.; Fairbank, Jr.; Fairbank, D.; Farine, J.; Feyzbakhsh, S.; Fierlinger, P.; Fudenberg, D.; Gautam, P.; Gornea, R.; Gratta, G.; Hall, C.; Hansen, E.V.; Hoessl, J.; Hufschmidt, P.; Hughes, M.; Iverson, A.; Jamil, A.; Jessiman, C.; Jewell, M.J.; Johnson, A.; Karelin, A.; Kaufman, L.J.; Koffas, T.; Krucken, R.; Kuchenkov, A.; Kumar, K.S.; Lan, Y.; Larson, A.; Lenardo, B.G.; Douglas Leonard; Li, G.S.; Li, S.; Li, Z.; Licciardi, C.; Lin, Y.H.; MacLellan, R.; McElroy, T.; Michel, T.; Mong, B.; Moore, D.C.; Murray, K.; Njoya, O.; Nusair, O.; Odian, A.; Ostrovskiy, I.; Perna, A.; Piepke, A.; Pocar, A.; Retiere, F.; Robinson, A.L.; Rowson, P.C.; Ruddell, D.; Runge, J.; Schmidt, S.; Sinclair, D.; Skarpaas, K.; Soma, A.K.; Stekhanov, V.; Tarka, M.; Thibado, S.; Todd, J.; Tolba, T.; Totev, T.I.; Tsang, R.; Veenstra, B.; Veeraraghavan, V.; Vogel, P.; Vuilleumier, J.-L.; Wagenpfeil, M.; Watkins, J.; Weber, M.; Wen, L.J.; Wichoski, U.; Wrede, G.; Wu, S.X.; Xia, Q.; Yahne, D.R.; Yang, L.; Yen, Y.-R.; Zeldovich, O.Ya.; Ziegler, T.
Publication Date
2021-12
Journal
Physical Review d, v.104, no.11
Publisher
American Physical Society
Abstract
© 2021 authors. Published by the American Physical Society.A search for Majoron-emitting modes of the neutrinoless double beta decay of Xe136 is performed with the full EXO-200 dataset. This dataset consists of a total Xe136 exposure of 234.1 kg·yr, and includes data with detector upgrades that have improved the energy threshold relative to previous searches. A lower limit of T1/2Xe136>4.3×1024 yr at 90% C.L. on the half-life of the spectral index n=1 Majoron decay was obtained, a factor of 3.6 more stringent than the previous limit from EXO-200 and a factor of 1.6 more stringent than the previous best limit from KamLAND-Zen. This limit corresponds to a constraint on the Majoron-neutrino coupling constant of |geeM|<(0.4-0.9)×10-5. The lower threshold and the additional data taken resulted in a factor 8.4 improvement for the n=7 mode compared to the previous EXO-200 search. This search provides the most stringent limits to date on the Majoron-emitting decays of Xe136 with spectral indices n=1, 2, 3, and 7.
URI
https://pr.ibs.re.kr/handle/8788114/12078
DOI
10.1103/PhysRevD.104.112002
ISSN
2470-0010
Appears in Collections:
Center for Underground Physics(지하실험 연구단) > 1. Journal Papers (저널논문)
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