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

doi:10.1103/PhysRevC.87.051305

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 journal › Article › peer-review

15 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 language	English
Article number	051305
Journal	Physical Review C - Nuclear Physics
Volume	87
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevC.87.051305
Publication status	Published - 28 May 2013
Externally published	Yes

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Roberts, A., Howard, A. M., Kolata, J. J., Villano, A. N., Becchetti, F. D., Deyoung, P. A., Febbraro, M., Freeman, S. J., Kay, B. P., McAllister, S. A., Mitchell, A. J., Schiffer, J. P., Thomas, J. S., & Torres-Isea, R. O. (2013). Proton pair correlations and the neutrinoless double-β decay of 76Ge. Physical Review C - Nuclear Physics, 87(5), Article 051305. https://doi.org/10.1103/PhysRevC.87.051305

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title = "Proton pair correlations and the neutrinoless double-β decay of 76Ge",

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.",

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

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doi = "10.1103/PhysRevC.87.051305",

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AU - Roberts, A.

AU - Howard, A. M.

AU - Kolata, J. J.

AU - Villano, A. N.

AU - Becchetti, F. D.

AU - Deyoung, P. A.

AU - Febbraro, M.

AU - Freeman, S. J.

AU - Kay, B. P.

AU - McAllister, S. A.

AU - Mitchell, A. J.

AU - Schiffer, J. P.

AU - Thomas, J. S.

AU - Torres-Isea, R. O.

PY - 2013/5/28

Y1 - 2013/5/28

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AB - 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.

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DO - 10.1103/PhysRevC.87.051305

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

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