Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2002-01-29
Phys.Rev. C66 (2002) 051304
Physics
Nuclear Physics
Nuclear Theory
4 pages 3 figures, superseeds first part of nucl-th/0104048 Present is new extended version: 5 pages 4 figures. Explains more
Scientific paper
10.1103/PhysRevC.66.051304
A gross estimate of the neutron skin [0.80(5)$(N-Z)/A$ fm] is extracted from experimental proton radii, represented by a four parameter fit, and observed mirror displacement energies (CDE). The calculation of the latter relies on an accurately derived Coulomb energy and smooth averages of the charge symmetry breaking potentials constrained to state of the art values. The only free parameter is the neutron skin itself. The Nolen Schiffer anomaly is reduced to small deviations (rms=127 keV) that exhibit a secular trend. It is argued that with state of the art shell model calculations the anomaly should disappear. Highly accurate fits to proton radii emerge as a fringe benefit.
Duflo J.
Zuker Andr'es P.
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