Proton Pair Correlations And The Neutrinoless Double-β Decay Of 76Ge

Authors

A. Roberts, University of Notre Dame
A. M. Howard, University of Notre Dame
J. J. Kolata, University of Notre Dame
A. N. Villano, University of Minnesota
F. D. Becchetti, University of Michigan - Ann Arbor
Paul A. DeYoung, Hope CollegeFollow
M. Febbraro, University of Michigan - Ann Arbor
S. J. Freeman, University of Manchester
B. P. Kay, University of York
S. A. McAllister, University of Manchester
A. J. Mitchell, University of Manchester
J. P. Schiffer, Argonne National Laboratory
J. S. Thomas, University of Manchester
R. O. Torres-Isea, University of Michigan - Ann Arbor

Document Type

Article

Publication Date

5-28-2013

Publication Source

Physical Review C

Volume Number

87

Issue Number

5

Publisher

American Physical Society

ISSN

0556-2813

Abstract

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

Keywords

HE-3, N REACTION; STATES

Recommended Citation

Roberts, A., A. M. Howard, J. J. Kolata, A. N. Villano, F. D. Becchetti, Paul A. DeYoung, M. Febbraro, S. J. Freeman, B. P. Kay, S. A. McAllister, A. J. Mitchell, J. P. Schiffer, J. S. Thomas and R. O. Torres-Isea. "Proton Pair Correlations and the Neutrinoless Double-Β Decay of 76ge." Physical Review C 87, no. 5 (2013). http://link.aps.org/doi/10.1103/PhysRevC.87.051305