Search for two-neutrino double-beta decay of 136Xe to the excited state of 136Ba with the complete EXO-200 dataset

S. Al Kharusi; G. Anton; I. Badhrees; P. S. Barbeau; D. Beck; V. Belov; T. Bhatta; M. Breidenbach; T. Brunner; G. F. Cao; W. R. Cen; C. Chambers; B. Cleveland; M. Coon; A. Craycraft; T. Daniels; L. Darroch; S. J. Daugherty; J. Davis; S. Delaquis; A. Der Mesrobian-Kabakian; R. Devoe; J. Dilling; A. Dolgolenko; M. J. Dolinski; J. Echevers; W. Fairbank; D. Fairbank; J. Farine; S. Feyzbakhsh; P. Fierlinger; Y. S. Fu; D. Fudenberg; P. Gautam; R. Gornea; G. Gratta; C. Hall; E. V. Hansen; J. Hoessl; P. Hufschmidt; M. Hughes; A. Iverson; A. Jamil; C. Jessiman; M. J. Jewell; A. Johnson; A. Karelin; L. J. Kaufman; T. Koffas; R. Krücken; A. Kuchenkov; K. S. Kumar; Y. Lan; A. Larson; B. G. Lenardo; D. S. Leonard; G. S. Li; S. Li; Z. Li; C. Licciardi; Y. H. Lin; R. MacLellan; T. McElroy; T. Michel; B. Mong; D. C. Moore; K. Murray; O. Njoya; O. Nusair; A. Odian; I. Ostrovskiy; A. Perna; A. Piepke; A. Pocar; F. Retière; A. L. Robinson; P. C. Rowson; J. Runge; S. Schmidt; D. Sinclair; K. Skarpaas; A. K. Soma; V. Stekhanov; M. Tarka; S. Thibado; J. Todd; T. Tolba; T. I. Totev; R. Tsang; B. Veenstra; V. Veeraraghavan; P. Vogel; J. L. Vuilleumier; M. Wagenpfeil; J. Watkins; M. Weber; L. J. Wen; U. Wichoski; G. Wrede; S. X. Wu; Q. Xia; D. R. Yahne; L. Yang; Y. R. Yen; O. Ya Zeldovich; T. Ziegler

doi:10.1088/1674-1137/aceee3

Search for two-neutrino double-beta decay of ¹³⁶Xe to the excited state of ¹³⁶Ba with the complete EXO-200 dataset

S. Al Kharusi, G. Anton, I. Badhrees, P. S. Barbeau, D. Beck, V. Belov, T. Bhatta, M. Breidenbach, T. Brunner, G. F. Cao, W. R. Cen, C. Chambers, B. Cleveland, M. Coon, A. Craycraft, T. Daniels, L. Darroch, S. J. Daugherty, J. Davis, S. DelaquisA. Der Mesrobian-Kabakian, R. Devoe, J. Dilling, A. Dolgolenko, M. J. Dolinski, J. Echevers, W. Fairbank, D. Fairbank, J. Farine, S. Feyzbakhsh, P. Fierlinger, Y. S. Fu, D. Fudenberg, P. Gautam, R. Gornea, G. Gratta, C. Hall, E. V. Hansen, J. Hoessl, P. Hufschmidt, M. Hughes, A. Iverson, A. Jamil, C. Jessiman, M. J. Jewell, A. Johnson, A. Karelin, L. J. Kaufman, T. Koffas, R. Krücken, A. Kuchenkov, K. S. Kumar, Y. Lan, A. Larson, B. G. Lenardo, D. S. Leonard, G. S. Li, S. Li, Z. Li, C. Licciardi, Y. H. Lin, R. MacLellan, T. McElroy, T. Michel, B. Mong, D. C. Moore, K. Murray, O. Njoya, O. Nusair, A. Odian, I. Ostrovskiy, A. Perna, A. Piepke, A. Pocar, F. Retière, A. L. Robinson, P. C. Rowson, J. Runge, S. Schmidt, D. Sinclair, K. Skarpaas, A. K. Soma, V. Stekhanov, M. Tarka, S. Thibado, J. Todd, T. Tolba, T. I. Totev, R. Tsang, B. Veenstra, V. Veeraraghavan, P. Vogel, J. L. Vuilleumier, M. Wagenpfeil, J. Watkins, M. Weber, L. J. Wen, U. Wichoski, G. Wrede, S. X. Wu, Q. Xia, D. R. Yahne, L. Yang, Y. R. Yen, O. Ya Zeldovich, T. Ziegler

Research output: Contribution to journal › Article › peer-review

Abstract

A new search for two-neutrino double-beta (2νββ) decay of ¹³⁶Xe to the excited state of ¹³⁶Ba is performed with the full EXO-200 dataset. A deep learning-based convolutional neural network is used to discriminate signal from background events. Signal detection efficiency is increased relative to previous searches by EXO-200 by more than a factor of two. With the addition of the Phase II dataset taken with an upgraded detector, the median 90% confidence level half-life sensitivity of 2νββ decay to the state of ¹³⁶Ba is yr using a total ¹³⁶Xe exposure of 234.1 kg yr. No statistically significant evidence for 2νββ decay to the state is observed, leading to a lower limit of yr at 90% confidence level, improved by 70% relative to the current world's best constraint.

Original language	English
Article number	103001
Journal	Chinese Physics C
Volume	47
Issue number	10
DOIs	https://doi.org/10.1088/1674-1137/aceee3
State	Published - Oct 2023

Bibliographical note

Publisher Copyright:
© 2023 Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd.

Funding

EXO-200 is supported by DOE and NSF in the United States, NSERC in Canada, SNF in Switzerland, IBS in Korea, DFG in Germany, and CAS in China. EXO-200 data analysis and simulation uses resources of the National Energy Research Scientific Computing Center (NERSC)

Funders	Funder number
National Science Foundation Arctic Social Science Program
U.S. Department of Energy EPSCoR
Natural Sciences and Engineering Research Council of Canada
Deutsche Forschungsgemeinschaft
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
Chinese Academy of Sciences

Keywords

EXO-200 experiment
excited state
neutrinoless double beta decay

ASJC Scopus subject areas

Nuclear and High Energy Physics
Instrumentation
Astronomy and Astrophysics

Access to Document

10.1088/1674-1137/aceee3

Cite this

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., ... Ziegler, T. (2023). Search for two-neutrino double-beta decay of ¹³⁶Xe to the excited state of ¹³⁶Ba with the complete EXO-200 dataset. Chinese Physics C, 47(10), Article 103001. https://doi.org/10.1088/1674-1137/aceee3

@article{cb9374fc0e2e4ca0ad8a99b0032dd34b,

title = "Search for two-neutrino double-beta decay of 136Xe to the excited state of 136Ba with the complete EXO-200 dataset",

abstract = "A new search for two-neutrino double-beta (2νββ) decay of 136Xe to the excited state of 136Ba is performed with the full EXO-200 dataset. A deep learning-based convolutional neural network is used to discriminate signal from background events. Signal detection efficiency is increased relative to previous searches by EXO-200 by more than a factor of two. With the addition of the Phase II dataset taken with an upgraded detector, the median 90% confidence level half-life sensitivity of 2νββ decay to the state of 136Ba is yr using a total 136Xe exposure of 234.1 kg yr. No statistically significant evidence for 2νββ decay to the state is observed, leading to a lower limit of yr at 90% confidence level, improved by 70% relative to the current world's best constraint.",

keywords = "EXO-200 experiment, excited state, neutrinoless double beta decay",

author = "{Al Kharusi}, S. and G. Anton and I. Badhrees and Barbeau, {P. S.} and D. Beck and V. Belov and T. Bhatta and M. Breidenbach and T. Brunner and Cao, {G. F.} and Cen, {W. R.} and C. Chambers and B. Cleveland and M. Coon and A. Craycraft and T. Daniels and L. Darroch and Daugherty, {S. J.} and J. Davis and S. Delaquis and {Der Mesrobian-Kabakian}, A. and R. Devoe and J. Dilling and A. Dolgolenko and Dolinski, {M. J.} and J. Echevers and W. Fairbank and D. Fairbank and J. Farine and S. Feyzbakhsh and P. Fierlinger and Fu, {Y. S.} and D. Fudenberg and P. Gautam and R. Gornea and G. Gratta and C. Hall and Hansen, {E. V.} and J. Hoessl and P. Hufschmidt and M. Hughes and A. Iverson and A. Jamil and C. Jessiman and Jewell, {M. J.} and A. Johnson and A. Karelin and Kaufman, {L. J.} and T. Koffas and R. Kr{\"u}cken and A. Kuchenkov and Kumar, {K. S.} and Y. Lan and A. Larson and Lenardo, {B. G.} and Leonard, {D. S.} and Li, {G. S.} and S. Li and Z. Li and C. Licciardi and Lin, {Y. H.} and R. MacLellan and T. McElroy and T. Michel and B. Mong and Moore, {D. C.} and K. Murray and O. Njoya and O. Nusair and A. Odian and I. Ostrovskiy and A. Perna and A. Piepke and A. Pocar and F. Reti{\`e}re and Robinson, {A. L.} and Rowson, {P. C.} and J. Runge and S. Schmidt and D. Sinclair and K. Skarpaas and Soma, {A. K.} and V. Stekhanov and M. Tarka and S. Thibado and J. Todd and T. Tolba and Totev, {T. I.} and R. Tsang and B. Veenstra and V. Veeraraghavan and P. Vogel and Vuilleumier, {J. L.} and M. Wagenpfeil and J. Watkins and M. Weber and Wen, {L. J.} and U. Wichoski and G. Wrede and Wu, {S. X.} and Q. Xia and Yahne, {D. R.} and L. Yang and Yen, {Y. R.} and Zeldovich, {O. Ya} and T. Ziegler",

note = "Publisher Copyright: {\textcopyright} 2023 Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd.",

year = "2023",

month = oct,

doi = "10.1088/1674-1137/aceee3",

language = "English",

volume = "47",

number = "10",

}

Al Kharusi, S, Anton, G, Badhrees, I, Barbeau, PS, Beck, D, Belov, V, Bhatta, T, Breidenbach, M, Brunner, T, Cao, GF, Cen, WR, Chambers, C, Cleveland, B, Coon, M, Craycraft, A, Daniels, T, Darroch, L, Daugherty, SJ, Davis, J, Delaquis, S, Der Mesrobian-Kabakian, A, Devoe, R, Dilling, J, Dolgolenko, A, Dolinski, MJ, Echevers, J, Fairbank, W, Fairbank, D, Farine, J, Feyzbakhsh, S, Fierlinger, P, Fu, YS, Fudenberg, D, Gautam, P, Gornea, R, Gratta, G, Hall, C, Hansen, EV, Hoessl, J, Hufschmidt, P, Hughes, M, Iverson, A, Jamil, A, Jessiman, C, Jewell, MJ, Johnson, A, Karelin, A, Kaufman, LJ, Koffas, T, Krücken, R, Kuchenkov, A, Kumar, KS, Lan, Y, Larson, A, Lenardo, BG, Leonard, DS, Li, GS, Li, S, Li, Z, Licciardi, C, Lin, YH, MacLellan, R, McElroy, T, Michel, T, Mong, B, Moore, DC, Murray, K, Njoya, O, Nusair, O, Odian, A, Ostrovskiy, I, Perna, A, Piepke, A, Pocar, A, Retière, F, Robinson, AL, Rowson, PC, Runge, J, Schmidt, S, Sinclair, D, Skarpaas, K, Soma, AK, Stekhanov, V, Tarka, M, Thibado, S, Todd, J, Tolba, T, Totev, TI, Tsang, R, Veenstra, B, Veeraraghavan, V, Vogel, P, Vuilleumier, JL, Wagenpfeil, M, Watkins, J, Weber, M, Wen, LJ, Wichoski, U, Wrede, G, Wu, SX, Xia, Q, Yahne, DR, Yang, L, Yen, YR, Zeldovich, OY & Ziegler, T 2023, 'Search for two-neutrino double-beta decay of ¹³⁶Xe to the excited state of ¹³⁶Ba with the complete EXO-200 dataset', Chinese Physics C, vol. 47, no. 10, 103001. https://doi.org/10.1088/1674-1137/aceee3

TY - JOUR

T1 - Search for two-neutrino double-beta decay of 136Xe to the excited state of 136Ba with the complete EXO-200 dataset

AU - Al Kharusi, S.

AU - Anton, G.

AU - Badhrees, I.

AU - Barbeau, P. S.

AU - Beck, D.

AU - Belov, V.

AU - Bhatta, T.

AU - Breidenbach, M.

AU - Brunner, T.

AU - Cao, G. F.

AU - Cen, W. R.

AU - Chambers, C.

AU - Cleveland, B.

AU - Coon, M.

AU - Craycraft, A.

AU - Daniels, T.

AU - Darroch, L.

AU - Daugherty, S. J.

AU - Davis, J.

AU - Delaquis, S.

AU - Der Mesrobian-Kabakian, A.

AU - Devoe, R.

AU - Dilling, J.

AU - Dolgolenko, A.

AU - Dolinski, M. J.

AU - Echevers, J.

AU - Fairbank, W.

AU - Fairbank, D.

AU - Farine, J.

AU - Feyzbakhsh, S.

AU - Fierlinger, P.

AU - Fu, Y. S.

AU - Fudenberg, D.

AU - Gautam, P.

AU - Gornea, R.

AU - Gratta, G.

AU - Hall, C.

AU - Hansen, E. V.

AU - Hoessl, J.

AU - Hufschmidt, P.

AU - Hughes, M.

AU - Iverson, A.

AU - Jamil, A.

AU - Jessiman, C.

AU - Jewell, M. J.

AU - Johnson, A.

AU - Karelin, A.

AU - Kaufman, L. J.

AU - Koffas, T.

AU - Krücken, R.

AU - Kuchenkov, A.

AU - Kumar, K. S.

AU - Lan, Y.

AU - Larson, A.

AU - Lenardo, B. G.

AU - Leonard, D. S.

AU - Li, G. S.

AU - Li, S.

AU - Li, Z.

AU - Licciardi, C.

AU - Lin, Y. H.

AU - MacLellan, R.

AU - McElroy, T.

AU - Michel, T.

AU - Mong, B.

AU - Moore, D. C.

AU - Murray, K.

AU - Njoya, O.

AU - Nusair, O.

AU - Odian, A.

AU - Ostrovskiy, I.

AU - Perna, A.

AU - Piepke, A.

AU - Pocar, A.

AU - Retière, F.

AU - Robinson, A. L.

AU - Rowson, P. C.

AU - Runge, J.

AU - Schmidt, S.

AU - Sinclair, D.

AU - Skarpaas, K.

AU - Soma, A. K.

AU - Stekhanov, V.

AU - Tarka, M.

AU - Thibado, S.

AU - Todd, J.

AU - Tolba, T.

AU - Totev, T. I.

AU - Tsang, R.

AU - Veenstra, B.

AU - Veeraraghavan, V.

AU - Vogel, P.

AU - Vuilleumier, J. L.

AU - Wagenpfeil, M.

AU - Watkins, J.

AU - Weber, M.

AU - Wen, L. J.

AU - Wichoski, U.

AU - Wrede, G.

AU - Wu, S. X.

AU - Xia, Q.

AU - Yahne, D. R.

AU - Yang, L.

AU - Yen, Y. R.

AU - Zeldovich, O. Ya

AU - Ziegler, T.

N1 - Publisher Copyright: © 2023 Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd.

PY - 2023/10

Y1 - 2023/10

N2 - A new search for two-neutrino double-beta (2νββ) decay of 136Xe to the excited state of 136Ba is performed with the full EXO-200 dataset. A deep learning-based convolutional neural network is used to discriminate signal from background events. Signal detection efficiency is increased relative to previous searches by EXO-200 by more than a factor of two. With the addition of the Phase II dataset taken with an upgraded detector, the median 90% confidence level half-life sensitivity of 2νββ decay to the state of 136Ba is yr using a total 136Xe exposure of 234.1 kg yr. No statistically significant evidence for 2νββ decay to the state is observed, leading to a lower limit of yr at 90% confidence level, improved by 70% relative to the current world's best constraint.

AB - A new search for two-neutrino double-beta (2νββ) decay of 136Xe to the excited state of 136Ba is performed with the full EXO-200 dataset. A deep learning-based convolutional neural network is used to discriminate signal from background events. Signal detection efficiency is increased relative to previous searches by EXO-200 by more than a factor of two. With the addition of the Phase II dataset taken with an upgraded detector, the median 90% confidence level half-life sensitivity of 2νββ decay to the state of 136Ba is yr using a total 136Xe exposure of 234.1 kg yr. No statistically significant evidence for 2νββ decay to the state is observed, leading to a lower limit of yr at 90% confidence level, improved by 70% relative to the current world's best constraint.

KW - EXO-200 experiment

KW - excited state

KW - neutrinoless double beta decay

UR - http://www.scopus.com/inward/record.url?scp=85175428576&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85175428576&partnerID=8YFLogxK

U2 - 10.1088/1674-1137/aceee3

DO - 10.1088/1674-1137/aceee3

M3 - Article

AN - SCOPUS:85175428576

SN - 1674-1137

VL - 47

JO - Chinese Physics C

JF - Chinese Physics C

IS - 10

M1 - 103001

ER -