Rearrangement of valence neutrons in the neutrinoless double- β decay of Xe 136

A quantitative description of the change in ground-state neutron occupancies between 136Xe and 136Ba, the initial and final state in the neutrinoless double-β decay of 136Xe, has been extracted from precision measurements of the cross sections of single-neutron adding and -removing reactions. Compar...

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Veröffentlicht in:Physical review. C 2016-11, Vol.94 (5), Article 054314
Hauptverfasser: Szwec, S. V., Kay, B. P., Cocolios, T. E., Entwisle, J. P., Freeman, S. J., Gaffney, L. P., Guimarães, V., Hammache, F., McKee, P. P., Parr, E., Portail, C., Schiffer, J. P., de Séréville, N., Sharp, D. K., Smith, J. F., Stefan, I.
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container_end_page
container_issue 5
container_start_page
container_title Physical review. C
container_volume 94
creator Szwec, S. V.
Kay, B. P.
Cocolios, T. E.
Entwisle, J. P.
Freeman, S. J.
Gaffney, L. P.
Guimarães, V.
Hammache, F.
McKee, P. P.
Parr, E.
Portail, C.
Schiffer, J. P.
de Séréville, N.
Sharp, D. K.
Smith, J. F.
Stefan, I.
description A quantitative description of the change in ground-state neutron occupancies between 136Xe and 136Ba, the initial and final state in the neutrinoless double-β decay of 136Xe, has been extracted from precision measurements of the cross sections of single-neutron adding and -removing reactions. Comparisons are made to recent theoretical calculations of the same properties using various nuclear-structure models. These are the same calculations used to determine the magnitude of the nuclear matrix elements for the process, which at present disagree with each other by factors of 2 or 3. The experimental neutron occupancies show some disagreement with the theoretical calculations.
doi_str_mv 10.1103/PhysRevC.94.054314
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title Rearrangement of valence neutrons in the neutrinoless double- β decay of Xe 136
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