Nuclear structure relevant to neutrinoless double beta decay: The valence protons in Ge-76 and Se-76

B. P. Kay; J. P. Schiffer; S. J. Freeman; T. Adachi; J. A. Clark; C. M. Deibel; H. Fujita; Y. Fujita; P. Grabmayr; K. Hatanaka; D. Ishikawa; H. Matsubara; Y. Meada; H. Okamura; K. E. Rehm; Y. Sakemi; Y. Shimizu; H. Shimoda; K. Suda; Y. Tameshige; A. Tamii; C. Wrede

doi:10.1103/PhysRevC.79.021301

Nuclear structure relevant to neutrinoless double beta decay: The valence protons in Ge-76 and Se-76

B. P. Kay, J. P. Schiffer, S. J. Freeman, T. Adachi, J. A. Clark, C. M. Deibel, H. Fujita, Y. Fujita, P. Grabmayr, K. Hatanaka, D. Ishikawa, H. Matsubara, Y. Meada, H. Okamura, K. E. Rehm, Y. Sakemi, Y. Shimizu, H. Shimoda, K. Suda, Y. TameshigeA. Tamii, C. Wrede

Physics

Research output: Contribution to journal › Article › peer-review

Abstract

The possibility of observing neutrinoless double beta decay offers the opportunity of determining the effective neutrino mass if the nuclear matrix element were known. Theoretical calculations are uncertain, and the occupation of valence orbits by nucleons active in the decay is likely to be important. The occupation of valence proton orbits in the ground states of Ge-76, a candidate for such decay, and Se-76, the corresponding daughter nucleus, is determined by precisely measuring cross sections for proton-removing transfer reactions. As in previous work on neutron occupation, we find that the Fermi surface for protons is much more diffuse than previously thought, and the occupancies of at least three orbits change significantly between the two 0(+) ground states.

Original language	English
Article number	021301
Pages (from-to)	1-4
Number of pages	4
Journal	Physical Review C
Volume	79
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevC.79.021301
Publication status	Published - 2 Feb 2009

Keywords

HE-3
OCCUPANCIES
SCATTERING
AS-77

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10.1103/PhysRevC.79.021301

http://prc.aps.org/abstract/PRC/v79/i2/e021301

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Kay, B. P., Schiffer, J. P., Freeman, S. J., Adachi, T., Clark, J. A., Deibel, C. M., Fujita, H., Fujita, Y., Grabmayr, P., Hatanaka, K., Ishikawa, D., Matsubara, H., Meada, Y., Okamura, H., Rehm, K. E., Sakemi, Y., Shimizu, Y., Shimoda, H., Suda, K., ... Wrede, C. (2009). Nuclear structure relevant to neutrinoless double beta decay: The valence protons in Ge-76 and Se-76. Physical Review C, 79(2), 1-4. Article 021301. https://doi.org/10.1103/PhysRevC.79.021301

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title = "Nuclear structure relevant to neutrinoless double beta decay: The valence protons in Ge-76 and Se-76",

abstract = "The possibility of observing neutrinoless double beta decay offers the opportunity of determining the effective neutrino mass if the nuclear matrix element were known. Theoretical calculations are uncertain, and the occupation of valence orbits by nucleons active in the decay is likely to be important. The occupation of valence proton orbits in the ground states of Ge-76, a candidate for such decay, and Se-76, the corresponding daughter nucleus, is determined by precisely measuring cross sections for proton-removing transfer reactions. As in previous work on neutron occupation, we find that the Fermi surface for protons is much more diffuse than previously thought, and the occupancies of at least three orbits change significantly between the two 0(+) ground states.",

keywords = "HE-3, OCCUPANCIES, SCATTERING, AS-77",

author = "Kay, {B. P.} and Schiffer, {J. P.} and Freeman, {S. J.} and T. Adachi and Clark, {J. A.} and Deibel, {C. M.} and H. Fujita and Y. Fujita and P. Grabmayr and K. Hatanaka and D. Ishikawa and H. Matsubara and Y. Meada and H. Okamura and Rehm, {K. E.} and Y. Sakemi and Y. Shimizu and H. Shimoda and K. Suda and Y. Tameshige and A. Tamii and C. Wrede",

year = "2009",

month = feb,

day = "2",

doi = "10.1103/PhysRevC.79.021301",

language = "English",

volume = "79",

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publisher = "American Physical Society",

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Kay, BP, Schiffer, JP, Freeman, SJ, Adachi, T, Clark, JA, Deibel, CM, Fujita, H, Fujita, Y, Grabmayr, P, Hatanaka, K, Ishikawa, D, Matsubara, H, Meada, Y, Okamura, H, Rehm, KE, Sakemi, Y, Shimizu, Y, Shimoda, H, Suda, K, Tameshige, Y, Tamii, A & Wrede, C 2009, 'Nuclear structure relevant to neutrinoless double beta decay: The valence protons in Ge-76 and Se-76', Physical Review C, vol. 79, no. 2, 021301, pp. 1-4. https://doi.org/10.1103/PhysRevC.79.021301

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AU - Kay, B. P.

AU - Schiffer, J. P.

AU - Freeman, S. J.

AU - Adachi, T.

AU - Clark, J. A.

AU - Deibel, C. M.

AU - Fujita, H.

AU - Fujita, Y.

AU - Grabmayr, P.

AU - Hatanaka, K.

AU - Ishikawa, D.

AU - Matsubara, H.

AU - Meada, Y.

AU - Okamura, H.

AU - Rehm, K. E.

AU - Sakemi, Y.

AU - Shimizu, Y.

AU - Shimoda, H.

AU - Suda, K.

AU - Tameshige, Y.

AU - Tamii, A.

AU - Wrede, C.

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AB - The possibility of observing neutrinoless double beta decay offers the opportunity of determining the effective neutrino mass if the nuclear matrix element were known. Theoretical calculations are uncertain, and the occupation of valence orbits by nucleons active in the decay is likely to be important. The occupation of valence proton orbits in the ground states of Ge-76, a candidate for such decay, and Se-76, the corresponding daughter nucleus, is determined by precisely measuring cross sections for proton-removing transfer reactions. As in previous work on neutron occupation, we find that the Fermi surface for protons is much more diffuse than previously thought, and the occupancies of at least three orbits change significantly between the two 0(+) ground states.

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KW - OCCUPANCIES

KW - SCATTERING

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JF - Physical Review C

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ER -

Nuclear structure relevant to neutrinoless double beta decay: The valence protons in Ge-76 and Se-76

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Keywords

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