Searches for Double Beta Decay of \(^{134}\)Xe with EXO-200

Searches for Double Beta Decay of \(^{134}\)Xe with EXO-200

Searches for double beta decay of \(^{134}\)Xe were performed with EXO-200, a single-phase liquid xenon detector designed to search for neutrinoless double beta decay of \(^{136}\)Xe. Using an exposure of \(29.6\text{ kg}\!\cdot\!\text{yr}\), the lower limits of \(\text{T}_{1/2}^{2\nu\beta\!\beta}&g...

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Veröffentlicht in:arXiv.org 2017-11
Hauptverfasser: EXO-200 Collaboration, Albert, J B, Anton, G, Badhrees, I, Barbeau, P S, Bayerlein, R, Beck, D, Belov, V, Breidenbach, M, Brunner, T, Cao, G F, Cen, W R, Chambers, C, Cleveland, B, Coon, M, Craycraft, A, Cree, W, Daniels, T, Danilov, M, Daugherty, S J, Daughhetee, J, Davis, J, Delaquis, S, A Der Mesrobian-Kabakian, DeVoe, R, Didberidze, T, Dilling, J, Dolgolenko, A, Dolinski, M J, Fairbank, W, Farine, J, Feyzbakhsh, S, Fierlinger, P, Fudenberg, D, Gornea, R, Graham, K, Gratta, G, Hall, C, Hoessl, J, Hufschmidt, P, Hughes, M, Jamil, A, Jewell, M J, Johnson, A, Johnston, S, Karelin, A, Kaufman, L J, Koffas, T, Kravitz, S, Krücken, R, Kuchenkov, A, Kumar, K S, Lan, Y, Leonard, D S, S Li, Licciardi, C, Lin, Y H, MacLellan, R, Marino, M G, Michel, T, Mong, B, Moore, D, Murray, K, Nelson, R, Njoya, O, Odian, A, Ostrovskiy, I, Piepke, A, Pocar, A, Retière, F, Rowson, P C, Russell, J J, Schubert, A, Sinclair, D, Smith, E, Stekhanov, V, Tarka, M, Tolba, T, Tsang, R, Vogel, P, J -L Vuilleumier, Wagenpfeil, M, Waite, A, Walton, J, Walton, T, Weber, M, Wen, L J, Wichoski, U, Yang, L, Y -R Yen, O Ya Zeldovich, Zettlemoyer, J, Ziegler, T
Format: Artikel
Sprache:eng
Schlagworte:
Beta decay
Confidence intervals
Physics - High Energy Physics - Experiment
Physics - Nuclear Experiment
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Zusammenfassung:Searches for double beta decay of \(^{134}\)Xe were performed with EXO-200, a single-phase liquid xenon detector designed to search for neutrinoless double beta decay of \(^{136}\)Xe. Using an exposure of \(29.6\text{ kg}\!\cdot\!\text{yr}\), the lower limits of \(\text{T}_{1/2}^{2\nu\beta\!\beta}>8.7\cdot10^{20}\text{ yr}\) and \(\text{T}_{1/2}^{0\nu\beta\!\beta}>1.1\cdot10^{23}\text{ yr}\) at 90% confidence level were derived, with corresponding half-life sensitivities of \(1.2\cdot10^{21}\text{ yr}\) and \(1.9\cdot10^{23}\text{ yr}\). These limits exceed those in the literature for \(^{134}\)Xe, improving by factors of nearly \(10^{5}\) and 2 for the two antineutrino and neutrinoless modes, respectively.
ISSN:2331-8422
DOI:10.48550/arxiv.1704.05042