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Search for 2νββ decay of Xe 136 to the 01+ excited state of Ba 136 with the EXO-200 liquid xenon detector

Publication ,  Journal Article
Albert, JB; Auty, DJ; Barbeau, PS; Beck, D; Belov, V; Breidenbach, M; Brunner, T; Burenkov, A; Cao, GF; Chambers, C; Chaves, J; Cleveland, B ...
Published in: Physical Review C
March 8, 2016

EXO-200 is a single phase liquid xenon detector designed to search for neutrinoless ββ decay of Xe136 to the ground state of Ba136. We report here on a search for the two-neutrino ββ decay of Xe136 to the first 0+ excited state, 01+, of Ba136 based on a 100 kgyr exposure of Xe136. Using a specialized analysis employing a machine learning algorithm, we obtain a 90% CL half-life sensitivity of 1.7×1024 yr. We find no statistically significant evidence for the 2νββ decay to the excited state resulting in a lower limit of T1/22ν (0+→01+) > 6.9 ×1023 yr at 90% CL. This observed limit is consistent with the estimated half-life of 2.5×1025 yr.

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Published In

Physical Review C

DOI

EISSN

2469-9993

ISSN

2469-9985

Publication Date

March 8, 2016

Volume

93

Issue

3

Related Subject Headings

  • 5106 Nuclear and plasma physics
 

Citation

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MLA
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Albert, J. B., Auty, D. J., Barbeau, P. S., Beck, D., Belov, V., Breidenbach, M., … Zeldovich, O. Y. (2016). Search for 2νββ decay of Xe 136 to the 01+ excited state of Ba 136 with the EXO-200 liquid xenon detector. Physical Review C, 93(3). https://doi.org/10.1103/PhysRevC.93.035501
Albert, J. B., D. J. Auty, P. S. Barbeau, D. Beck, V. Belov, M. Breidenbach, T. Brunner, et al. “Search for 2νββ decay of Xe 136 to the 01+ excited state of Ba 136 with the EXO-200 liquid xenon detector.” Physical Review C 93, no. 3 (March 8, 2016). https://doi.org/10.1103/PhysRevC.93.035501.
Albert JB, Auty DJ, Barbeau PS, Beck D, Belov V, Breidenbach M, et al. Search for 2νββ decay of Xe 136 to the 01+ excited state of Ba 136 with the EXO-200 liquid xenon detector. Physical Review C. 2016 Mar 8;93(3).
Albert, J. B., et al. “Search for 2νββ decay of Xe 136 to the 01+ excited state of Ba 136 with the EXO-200 liquid xenon detector.” Physical Review C, vol. 93, no. 3, Mar. 2016. Scopus, doi:10.1103/PhysRevC.93.035501.
Albert JB, Auty DJ, Barbeau PS, Beck D, Belov V, Breidenbach M, Brunner T, Burenkov A, Cao GF, Chambers C, Chaves J, Cleveland B, Coon M, Craycraft A, Daniels T, Danilov M, Daugherty SJ, Davis J, Delaquis S, Der Mesrobian-Kabakian A, Devoe R, Didberidze T, Dilling J, Dolgolenko A, Dolinski MJ, Dunford M, Fairbank W, Farine J, Feldmeier W, Feyzbakhsh S, Fierlinger P, Fudenberg D, Gornea R, Graham K, Gratta G, Hall C, Hughes M, Jewell MJ, Johnson A, Johnson TN, Johnston S, Karelin A, Kaufman LJ, Killick R, King J, Koffas T, Kravitz S, Krücken R, Kuchenkov A, Kumar KS, Leonard DS, Licciardi C, Lin YH, Ling J, Maclellan R, Marino MG, Mong B, Moore D, Njoya O, Nelson R, Odian A, Ostrovskiy I, Piepke A, Pocar A, Prescott CY, Retière F, Rowson PC, Russell JJ, Schubert A, Sinclair D, Smith E, Stekhanov V, Tarka M, Tolba T, Tsang R, Twelker K, Vogel P, Vuilleumier JL, Waite A, Walton J, Walton T, Weber M, Wen LJ, Wichoski U, Winick TA, Wood J, Xu QY, Yang L, Yen YR, Zeldovich OY. Search for 2νββ decay of Xe 136 to the 01+ excited state of Ba 136 with the EXO-200 liquid xenon detector. Physical Review C. 2016 Mar 8;93(3).

Published In

Physical Review C

DOI

EISSN

2469-9993

ISSN

2469-9985

Publication Date

March 8, 2016

Volume

93

Issue

3

Related Subject Headings

  • 5106 Nuclear and plasma physics