Searches for double beta decay of ${}^{134}\mathrm{Xe}$ with EXO-200

Journal Article · 03 November 2017 · Physical Review D

DOI: https://doi.org/10.1103/PhysRevD.96.092001 · OSTI ID:1410523

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.; Der Mesrobian-Kabakian, A.; 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.; Li, S.; 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.; Vuilleumier, J. -L.; Wagenpfeil, M.; Waite, A.; Walton, J.; Walton, T.; Weber, M.; Wen, L. J.; Wichoski, U.; Yang, L.; Yen, Y. -R.; Zeldovich, O. Ya.; Zettlemoyer, J.; Ziegler, T.

Searches for double beta decay of ¹³⁴Xe were performed with EXO-200, a single-phase liquid xenon detector designed to search for neutrinoless double beta decay of ¹³⁶Xe. Using an exposure of 29.6 kg ∙ yr , the lower limits of T$$2νββ\atop{1/2}$$ > 8.7 × 10²⁰ yr and T$$0νββ\atop{1/2}$$ > 1.1 × 10²³ yr at 90% confidence level were derived, with corresponding half-life sensitivities of 1.2 × 10²¹ yr and 1.9 × 10²³ yr . In conclusion, these limits exceed those in the literature for 134 Xe , improving by factors of nearly 10⁵ and 2 for the two antineutrino and neutrinoless modes, respectively.

• Research Organization: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE
• Contributing Organization: EXO-200 Collaboration
• Grant/Contract Number: AC02-76SF00515; ACI576RL10830
• OSTI ID: 1410523
• Alternate ID(s): OSTI ID: 1408179; OSTI ID: 1430699
• Report Number(s): PNNL-SA-131514; PRVDAQ; TRN: US1800122
• Journal Information: Physical Review D, Vol. 96, Issue 9; ISSN 2470-0010
• Publisher: American Physical Society (APS)Copyright Statement
• Country of Publication: United States
• Language: English