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Resonant enhancement of neutrinoless double-electron capture in 152Gd

In the search for the nuclide with the largest probability for neutrinoless double-electron capture, we have determined the Qϵϵ value between the ground states of 152Gd and 152Sm by Penning-trap mass-ratio measurements. The new Qϵϵ value of 55.70(18) keV results in a half-life of 1026 yr for a 1 eV...

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Main Authors: Eliseev, Sergey (Author) , Roux, C. (Author) , Blaum, Klaus (Author) , Block, M. (Author) , Droese, C. (Author) , Herfurth, Frank (Author) , Kluge, Heinz-Jürgen (Author) , Krivoruchenko, M. I. (Author) , Novikov, Yu. N. (Author) , Minaya Ramirez, E. (Author) , Schweikhard, L. (Author) , Shabaev, V. M. (Author) , Šimkovic, F. (Author) , Tupitsyn, I. I. (Author) , Zuber, K. (Author) , Zubova, N. A. (Author)
Format: Article (Journal)
Language:English
Published: 4 February 2011
In: Physical review letters
Year: 2011, Volume: 106, Pages: 1-4
ISSN:1079-7114
DOI:10.1103/PhysRevLett.106.052504
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevLett.106.052504
Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.106.052504
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Author Notes:S. Eliseev, C. Roux, K. Blaum, M. Block, C. Droese, F. Herfurth, H.-J. Kluge, M.I. Krivoruchenko, Yu. N. Novikov, E. Minaya Ramirez, L. Schweikhard, V.M. Shabaev, F. Šimkovic, I.I. Tupitsyn, K. Zuber, and N.A. Zubova
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Summary:In the search for the nuclide with the largest probability for neutrinoless double-electron capture, we have determined the Qϵϵ value between the ground states of 152Gd and 152Sm by Penning-trap mass-ratio measurements. The new Qϵϵ value of 55.70(18) keV results in a half-life of 1026 yr for a 1 eV neutrino mass. With this smallest half-life among known 0νϵϵ transitions, 152Gd is a promising candidate for the search for neutrinoless double-electron capture.
Item Description:Im Titel ist die Zahl 152 hochgestellt
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Physical Description:Online Resource
ISSN:1079-7114
DOI:10.1103/PhysRevLett.106.052504

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