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Search for neutrinoless double-electron capture of Dy 156

Publication ,  Journal Article
Finch, SW; Tornow, W
Published in: Physical Review C - Nuclear Physics
December 31, 2015

Background: Multiple large collaborations are currently searching for neutrinoless double-β decay, with the ultimate goal of differentiating the Majorana-Dirac nature of the neutrino. Purpose: Investigate the feasibility of resonant neutrinoless double-electron capture, an experimental alternative to neutrinoless double-β decay. Method: Two clover germanium detectors were operated underground in coincidence to search for the de-excitation γ rays of Gd156 following the neutrinoless double-electron capture of Dy156. 231.95 d of data were collected at the Kimballton underground research facility with a 231.57 mg enriched Dy156 sample. Results: No counts were seen above background and half-life limits are set at O(1016-1018) yr for the various decay modes of Dy156. Conclusion: Low background spectra were efficiently collected in the search for neutrinoless double-electron capture of Dy156, although the low natural abundance and associated lack of large quantities of enriched samples hinders the experimental reach.

Duke Scholars

Published In

Physical Review C - Nuclear Physics

DOI

EISSN

1089-490X

ISSN

0556-2813

Publication Date

December 31, 2015

Volume

92

Issue

6

Related Subject Headings

  • Nuclear & Particles Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
 

Citation

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Finch, S. W., & Tornow, W. (2015). Search for neutrinoless double-electron capture of Dy 156. Physical Review C - Nuclear Physics, 92(6). https://doi.org/10.1103/PhysRevC.92.065503
Finch, S. W., and W. Tornow. “Search for neutrinoless double-electron capture of Dy 156.” Physical Review C - Nuclear Physics 92, no. 6 (December 31, 2015). https://doi.org/10.1103/PhysRevC.92.065503.
Finch SW, Tornow W. Search for neutrinoless double-electron capture of Dy 156. Physical Review C - Nuclear Physics. 2015 Dec 31;92(6).
Finch, S. W., and W. Tornow. “Search for neutrinoless double-electron capture of Dy 156.” Physical Review C - Nuclear Physics, vol. 92, no. 6, Dec. 2015. Scopus, doi:10.1103/PhysRevC.92.065503.
Finch SW, Tornow W. Search for neutrinoless double-electron capture of Dy 156. Physical Review C - Nuclear Physics. 2015 Dec 31;92(6).

Published In

Physical Review C - Nuclear Physics

DOI

EISSN

1089-490X

ISSN

0556-2813

Publication Date

December 31, 2015

Volume

92

Issue

6

Related Subject Headings

  • Nuclear & Particles Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics