Results of the MAJORANA DEMONSTRATOR's Search for Double-Beta Decay of 76Ge to Excited States of 76Se

I. S. Guinn; I. J. Arnquist; F. T. Avignone; A. S. Barabash; C. J. Barton; F. E. Bertrand; B. Bos; M. Busch; M. Buuck; T. S. Caldwell; Y. D. Chan; C. D. Christofferson; P. H. Chu; M. L. Clark; C. Cuesta; J. A. Detwiler; A. Drobizhev; D. W. Edwins; Yu Efremenko; H. Ejiri; S. R. Elliott; T. Gilliss; G. K. Giovanetti; M. P. Green; J. Gruszko; V. E. Guiseppe; C. R. Haufe; R. J. Hegedus; R. Henning; D. Hervas Aguilar; E. W. Hoppe; A. Hostiuc; M. F. Kidd; I. Kim; R. T. Kouzes; A. M. Lopez; J. M. López-Castano; E. L. Martin; R. D. Martin; R. Massarczyk; S. J. Meijer; S. Mertens; J. Myslik; T. K. Oli; G. Othman; W. Pettus; A. W.P. Poon; D. C. Radford; J. Rager; A. L. Reine; K. Rielage; N. W. Ruof; M. J. Stortini; D. Tedeschi; R. L. Varner; J. F. Wilkerson; C. Wiseman; W. Xu; C. H. Yu; B. X. Zhu

doi:10.1088/1742-6596/1468/1/012115

Results of the MAJORANA DEMONSTRATOR's Search for Double-Beta Decay of ⁷⁶Ge to Excited States of ⁷⁶Se

I. S. Guinn, I. J. Arnquist, F. T. Avignone, A. S. Barabash, C. J. Barton, F. E. Bertrand, B. Bos, M. Busch, M. Buuck, T. S. Caldwell, Y. D. Chan, C. D. Christofferson, P. H. Chu, M. L. Clark, C. Cuesta, J. A. Detwiler, A. Drobizhev, D. W. Edwins, Yu Efremenko, H. EjiriS. R. Elliott, T. Gilliss, G. K. Giovanetti, M. P. Green, J. Gruszko, V. E. Guiseppe, C. R. Haufe, R. J. Hegedus, R. Henning, D. Hervas Aguilar, E. W. Hoppe, A. Hostiuc, M. F. Kidd, I. Kim, R. T. Kouzes, A. M. Lopez, J. M. López-Castano, E. L. Martin, R. D. Martin, R. Massarczyk, S. J. Meijer, S. Mertens, J. Myslik, T. K. Oli, G. Othman, W. Pettus, A. W.P. Poon, D. C. Radford, J. Rager, A. L. Reine, K. Rielage, N. W. Ruof, M. J. Stortini, D. Tedeschi, R. L. Varner, J. F. Wilkerson, C. Wiseman, W. Xu, C. H. Yu, B. X. Zhu

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Abstract

The MAJORANA DEMONSTRATOR is searching for double-beta decay of ⁷⁶Ge to excited states (E.S.) in ⁷⁶Se using a modular array of high purity Germanium detectors. ⁷⁶Ge can decay into three E.S.s of ⁷⁶Se. The E.S. decays have a clear event signature consisting of a ββ-decay with the prompt emission of one or two γ-rays, resulting in with high probability in a multi-site event. The granularity of the DEMONSTRATOR detector array enables powerful discrimination of this event signature from backgrounds. Using 21.3 kg-y of isotopic exposure, the DEMONSTRATOR has set world leading limits for each E.S. decay, with 90% CL lower half-life limits in the range of (0.56 2.1) ⋅ 10²⁴ y. In particular, for the 2v transition to the first 0⁺ E.S. of ⁷⁶Se, a lower half-life limit of 0.68 ⋅ 10²⁴ at 90% CL was achieved.

Original language	English
Article number	012115
Journal	Journal of Physics: Conference Series
Volume	1468
Issue number	1
DOIs	https://doi.org/10.1088/1742-6596/1468/1/012115
State	Published - Mar 20 2020
Event	16th International Conference on Topics in Astroparticle and Underground Physics, TAUP 2019 - Toyama, Japan Duration: Sep 9 2019 → Sep 13 2019

Funding

This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics, the Particle Astrophysics and Nuclear Physics Programs of the National Science Foundation, the Russian Foundation for Basic Research, the Natural Sciences and Engineering Research Council of Canada, the Canada Foundation for Innovation John R. Evans Leaders Fund, the National Energy Research Scientific Computing Center, and the Oak Ridge Leadership Computing Facility, and the Sanford Underground Research Facility.

Funders	Funder number
Canada Foundation for Innovation John R. Evans Leaders Fund
National Energy Research Scientific Computing Center
Office of Nuclear Physics
Sanford Underground Research Facility
National Science Foundation
U.S. Department of Energy
Office of Science
Natural Sciences and Engineering Research Council of Canada
Russian Foundation for Basic Research

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10.1088/1742-6596/1468/1/012115

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Guinn, I. S., Arnquist, I. J., Avignone, F. T., Barabash, A. S., Barton, C. J., Bertrand, F. E., Bos, B., Busch, M., Buuck, M., Caldwell, T. S., Chan, Y. D., Christofferson, C. D., Chu, P. H., Clark, M. L., Cuesta, C., Detwiler, J. A., Drobizhev, A., Edwins, D. W., Efremenko, Y., ... Zhu, B. X. (2020). Results of the MAJORANA DEMONSTRATOR's Search for Double-Beta Decay of ⁷⁶Ge to Excited States of ⁷⁶Se. Journal of Physics: Conference Series, 1468(1), Article 012115. https://doi.org/10.1088/1742-6596/1468/1/012115

@article{70338f0ca133467aa54ef4b9a18c9095,

title = "Results of the MAJORANA DEMONSTRATOR's Search for Double-Beta Decay of 76Ge to Excited States of 76Se",

abstract = "The MAJORANA DEMONSTRATOR is searching for double-beta decay of 76Ge to excited states (E.S.) in 76Se using a modular array of high purity Germanium detectors. 76Ge can decay into three E.S.s of 76Se. The E.S. decays have a clear event signature consisting of a ββ-decay with the prompt emission of one or two γ-rays, resulting in with high probability in a multi-site event. The granularity of the DEMONSTRATOR detector array enables powerful discrimination of this event signature from backgrounds. Using 21.3 kg-y of isotopic exposure, the DEMONSTRATOR has set world leading limits for each E.S. decay, with 90% CL lower half-life limits in the range of (0.56 2.1) ⋅ 1024 y. In particular, for the 2v transition to the first 0+ E.S. of 76Se, a lower half-life limit of 0.68 ⋅ 1024 at 90% CL was achieved.",

author = "Guinn, {I. S.} and Arnquist, {I. J.} and Avignone, {F. T.} and Barabash, {A. S.} and Barton, {C. J.} and Bertrand, {F. E.} and B. Bos and M. Busch and M. Buuck and Caldwell, {T. S.} and Chan, {Y. D.} and Christofferson, {C. D.} and Chu, {P. H.} and Clark, {M. L.} and C. Cuesta and Detwiler, {J. A.} and A. Drobizhev and Edwins, {D. W.} and Yu Efremenko and H. Ejiri and Elliott, {S. R.} and T. Gilliss and Giovanetti, {G. K.} and Green, {M. P.} and J. Gruszko and Guiseppe, {V. E.} and Haufe, {C. R.} and Hegedus, {R. J.} and R. Henning and {Hervas Aguilar}, D. and Hoppe, {E. W.} and A. Hostiuc and Kidd, {M. F.} and I. Kim and Kouzes, {R. T.} and Lopez, {A. M.} and L{\'o}pez-Castano, {J. M.} and Martin, {E. L.} and Martin, {R. D.} and R. Massarczyk and Meijer, {S. J.} and S. Mertens and J. Myslik and Oli, {T. K.} and G. Othman and W. Pettus and Poon, {A. W.P.} and Radford, {D. C.} and J. Rager and Reine, {A. L.} and K. Rielage and Ruof, {N. W.} and Stortini, {M. J.} and D. Tedeschi and Varner, {R. L.} and Wilkerson, {J. F.} and C. Wiseman and W. Xu and Yu, {C. H.} and Zhu, {B. X.}",

note = "Publisher Copyright: {\textcopyright} 2020 Published under licence by IOP Publishing Ltd.; 16th International Conference on Topics in Astroparticle and Underground Physics, TAUP 2019 ; Conference date: 09-09-2019 Through 13-09-2019",

year = "2020",

month = mar,

day = "20",

doi = "10.1088/1742-6596/1468/1/012115",

language = "English",

volume = "1468",

journal = "Journal of Physics: Conference Series",

issn = "1742-6588",

number = "1",

}

Guinn, IS, Arnquist, IJ, Avignone, FT, Barabash, AS, Barton, CJ, Bertrand, FE, Bos, B, Busch, M, Buuck, M, Caldwell, TS, Chan, YD, Christofferson, CD, Chu, PH, Clark, ML, Cuesta, C, Detwiler, JA, Drobizhev, A, Edwins, DW, Efremenko, Y, Ejiri, H, Elliott, SR, Gilliss, T, Giovanetti, GK, Green, MP, Gruszko, J, Guiseppe, VE, Haufe, CR, Hegedus, RJ, Henning, R, Hervas Aguilar, D, Hoppe, EW, Hostiuc, A, Kidd, MF, Kim, I, Kouzes, RT, Lopez, AM, López-Castano, JM, Martin, EL, Martin, RD, Massarczyk, R, Meijer, SJ, Mertens, S, Myslik, J, Oli, TK, Othman, G, Pettus, W, Poon, AWP, Radford, DC, Rager, J, Reine, AL, Rielage, K, Ruof, NW, Stortini, MJ, Tedeschi, D, Varner, RL, Wilkerson, JF, Wiseman, C, Xu, W, Yu, CH & Zhu, BX 2020, 'Results of the MAJORANA DEMONSTRATOR's Search for Double-Beta Decay of ⁷⁶Ge to Excited States of ⁷⁶Se', Journal of Physics: Conference Series, vol. 1468, no. 1, 012115. https://doi.org/10.1088/1742-6596/1468/1/012115

TY - JOUR

T1 - Results of the MAJORANA DEMONSTRATOR's Search for Double-Beta Decay of 76Ge to Excited States of 76Se

AU - Guinn, I. S.

AU - Arnquist, I. J.

AU - Avignone, F. T.

AU - Barabash, A. S.

AU - Barton, C. J.

AU - Bertrand, F. E.

AU - Bos, B.

AU - Busch, M.

AU - Buuck, M.

AU - Caldwell, T. S.

AU - Chan, Y. D.

AU - Christofferson, C. D.

AU - Chu, P. H.

AU - Clark, M. L.

AU - Cuesta, C.

AU - Detwiler, J. A.

AU - Drobizhev, A.

AU - Edwins, D. W.

AU - Efremenko, Yu

AU - Ejiri, H.

AU - Elliott, S. R.

AU - Gilliss, T.

AU - Giovanetti, G. K.

AU - Green, M. P.

AU - Gruszko, J.

AU - Guiseppe, V. E.

AU - Haufe, C. R.

AU - Hegedus, R. J.

AU - Henning, R.

AU - Hervas Aguilar, D.

AU - Hoppe, E. W.

AU - Hostiuc, A.

AU - Kidd, M. F.

AU - Kim, I.

AU - Kouzes, R. T.

AU - Lopez, A. M.

AU - López-Castano, J. M.

AU - Martin, E. L.

AU - Martin, R. D.

AU - Massarczyk, R.

AU - Meijer, S. J.

AU - Mertens, S.

AU - Myslik, J.

AU - Oli, T. K.

AU - Othman, G.

AU - Pettus, W.

AU - Poon, A. W.P.

AU - Radford, D. C.

AU - Rager, J.

AU - Reine, A. L.

AU - Rielage, K.

AU - Ruof, N. W.

AU - Stortini, M. J.

AU - Tedeschi, D.

AU - Varner, R. L.

AU - Wilkerson, J. F.

AU - Wiseman, C.

AU - Xu, W.

AU - Yu, C. H.

AU - Zhu, B. X.

PY - 2020/3/20

Y1 - 2020/3/20

N2 - The MAJORANA DEMONSTRATOR is searching for double-beta decay of 76Ge to excited states (E.S.) in 76Se using a modular array of high purity Germanium detectors. 76Ge can decay into three E.S.s of 76Se. The E.S. decays have a clear event signature consisting of a ββ-decay with the prompt emission of one or two γ-rays, resulting in with high probability in a multi-site event. The granularity of the DEMONSTRATOR detector array enables powerful discrimination of this event signature from backgrounds. Using 21.3 kg-y of isotopic exposure, the DEMONSTRATOR has set world leading limits for each E.S. decay, with 90% CL lower half-life limits in the range of (0.56 2.1) ⋅ 1024 y. In particular, for the 2v transition to the first 0+ E.S. of 76Se, a lower half-life limit of 0.68 ⋅ 1024 at 90% CL was achieved.

AB - The MAJORANA DEMONSTRATOR is searching for double-beta decay of 76Ge to excited states (E.S.) in 76Se using a modular array of high purity Germanium detectors. 76Ge can decay into three E.S.s of 76Se. The E.S. decays have a clear event signature consisting of a ββ-decay with the prompt emission of one or two γ-rays, resulting in with high probability in a multi-site event. The granularity of the DEMONSTRATOR detector array enables powerful discrimination of this event signature from backgrounds. Using 21.3 kg-y of isotopic exposure, the DEMONSTRATOR has set world leading limits for each E.S. decay, with 90% CL lower half-life limits in the range of (0.56 2.1) ⋅ 1024 y. In particular, for the 2v transition to the first 0+ E.S. of 76Se, a lower half-life limit of 0.68 ⋅ 1024 at 90% CL was achieved.

UR - http://www.scopus.com/inward/record.url?scp=85083099456&partnerID=8YFLogxK

U2 - 10.1088/1742-6596/1468/1/012115

DO - 10.1088/1742-6596/1468/1/012115

M3 - Conference article

AN - SCOPUS:85083099456

SN - 1742-6588

VL - 1468

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

IS - 1

M1 - 012115

T2 - 16th International Conference on Topics in Astroparticle and Underground Physics, TAUP 2019

Y2 - 9 September 2019 through 13 September 2019

ER -

Results of the MAJORANA DEMONSTRATOR's Search for Double-Beta Decay of ⁷⁶Ge to Excited States of ⁷⁶Se

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