TY - JOUR
T1 - Nuclear structure relevant to neutrinoless double β decay
T2 - The valence protons in Ge76 and Se76
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.
PY - 2009/2/2
Y1 - 2009/2/2
N2 - The possibility of observing neutrinoless double β 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 Ge76, a candidate for such decay, and Se76, 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.
AB - The possibility of observing neutrinoless double β 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 Ge76, a candidate for such decay, and Se76, 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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U2 - 10.1103/PhysRevC.79.021301
DO - 10.1103/PhysRevC.79.021301
M3 - Article
AN - SCOPUS:60549113981
SN - 0556-2813
VL - 79
JO - Physical Review C - Nuclear Physics
JF - Physical Review C - Nuclear Physics
IS - 2
M1 - 021301
ER -