Measurement of the Spectral Shape of the β-Decay of ¹³⁷Xe to the Ground State of ¹³⁷Cs in EXO-200 and Comparison with Theory
- Creators
- 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.
- Delaquis, S.
- Der Mesrobian-Kabakian, A.
- DeVoe, R.
- Dilling, J.
- Dolgolenko, A.
- Dolinski, M. J.
- Echevers, J.
- Fairbank, W.
- Fairbank, D.
- Farine, J.
- Feyzbakhsh, S.
- Fierlinger, P.
- Fudenberg, D.
- Gautam, P.
- Gornea, R.
- Gratta, G.
- Hall, C.
- Hansen, E. V.
- Hoessl, J.
- Hufschmidt, P.
- Hughes, M.
- Iverson, A.
- Jamil, A.
- Jessiman, C.
- Jewell, M. J.
- Johnson, A.
- Karelin, A.
- Kaufman, L. J.
- Koffas, T.
- Kostensalo, J.
- Krücken, R.
- Kuchenkov, A.
- Kumar, K. S.
- Lan, Y.
- Larson, A.
- Lenardo, B. G.
- Leonard, D. S.
- Li, G. S.
- Li, S.
- Li, Z.
- Licciardi, C.
- Lin, Y. H.
- MacLellan, R.
- McElroy, T.
- Michel, T.
- Mong, B.
- Moore, D. C.
- Murray, K.
- Nakarmi, P.
- Njoya, O.
- Nusair, O.
- Odian, A.
-
Ostrovskiy, I.
- Piepke, A.
- Pocar, A.
- Retière, F.
- Robinson, A. L.
- Rowson, P. C.
- Ruddell, D.
- Runge, J.
- Schmidt, S.
- Sinclair, D.
- Skarpaas, K.
- Soma, A. K.
- Stekhanov, V.
- Suhonen, J.
- Tarka, M.
- Thibado, S.
- Todd, J.
- Tolba, T.
- Totev, T. I.
- Tsang, R.
- Veenstra, B.
- Veeraraghavan, V.
-
Vogel, P.
- Vuilleumier, J.-L.
- Wagenpfeil, M.
- Watkins, J.
- Weber, M.
- Wen, L. J.
- Wichoski, U.
- Wrede, G.
- Wu, S. X.
- Xia, Q.
- Yahne, D. R.
- Yang, L.
- Yen, Y.-R.
- Zeldovich, O. Ya.
- Ziegler, T.
- EXO-200 Collaboration
Abstract
We report on a comparison between the theoretically predicted and experimentally measured spectra of the first-forbidden nonunique β-decay transition ¹³⁷Xe(7/2⁻)→¹³⁷Cs(7/2⁺). The experimental data were acquired by the EXO-200 experiment during a deployment of an AmBe neutron source. The ultralow background environment of EXO-200, together with dedicated source deployment and analysis procedures, allowed for collection of a pure sample of the decays, with an estimated signal to background ratio of more than 99 to 1 in the energy range from 1075 to 4175 keV. In addition to providing a rare and accurate measurement of the first-forbidden nonunique β-decay shape, this work constitutes a novel test of the calculated electron spectral shapes in the context of the reactor antineutrino anomaly and spectral bump.
Additional Information
© 2020 American Physical Society. Received 3 February 2020; revised manuscript received 17 April 2020; accepted 7 May 2020; published 12 June 2020. EXO-200 is supported by DOE and NSF in the United States, NSERC in Canada, IBS in Korea, RFBR (18-02-00550) in Russia, DFG in Germany, and CAS and ISTCP in China. EXO-200 data analysis and simulation uses resources of the National Energy Research Scientific Computing Center (NERSC). This work has been partially supported by the Academy of Finland under the Academy Project No. 318043. J. K. acknowledges the financial support from the Jenny and Antti Wihuri Foundation. We gratefully acknowledge the KARMEN collaboration for supplying the cosmic ray veto detectors, and the WIPP for their hospitality.Attached Files
Published - PhysRevLett.124.232502.pdf
Accepted Version - 2002.00108.pdf
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Additional details
- Alternative title
- Measurement of the Spectral Shape of the beta-decay of 137Xe to the Ground State of 137Cs in EXO-200 and Comparison with Theory
- Eprint ID
- 103902
- Resolver ID
- CaltechAUTHORS:20200612-150950688
- Department of Energy (DOE)
- NSF
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Institute for Basic Science (Korea)
- 18-02-00550
- Russian Foundation for Basic Research
- Deutsche Forschungsgemeinschaft (DFG)
- Chinese Academy of Sciences
- International Science and Technology Cooperation Project (ISTCP)
- 318043
- Academy of Finland
- Jenny and Antti Wihuri Foundation
- Created
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2020-06-12Created from EPrint's datestamp field
- Updated
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2021-11-16Created from EPrint's last_modified field