Proton pair correlations and the neutrinoless double-β decay of 76Ge

A. Roberts*, A. M. Howard, J. J. Kolata, A. N. Villano, F. D. Becchetti, P. A. Deyoung, M. Febbraro, S. J. Freeman, B. P. Kay, S. A. McAllister, A. J. Mitchell, J. P. Schiffer, J. S. Thomas, R. O. Torres-Isea

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

Proton pair correlations relevant for the neutrinoless double-β decay of 76Ge have been probed via the 74,76Ge(3He,n) reactions at 16 MeV. No evidence for pairing vibrations in either nucleus is observed at sensitivity limits of ∼6% and ∼19% of the ground-state strength in 76Se and 78Se, respectively. These results are relevant for the understanding of matrix elements for neutrinoless double-β decay. The lack of pairing vibrations is consistent with a simple BCS structure for the ground states of 76Ge and 76Se, assumed in quasiparticle random phase approximation (QRPA) models of the process.

Original languageEnglish
Article number051305
JournalPhysical Review C - Nuclear Physics
Volume87
Issue number5
DOIs
Publication statusPublished - 28 May 2013
Externally publishedYes

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