https://doi.org/10.1140/epja/i2008-10571-0
Regular Article - Theoretical Physics
Neutron-proton mass difference in finite nuclei and the Nolen-Schiffer anomaly
1
Helmholtz-Institut für Strahlen- und Kernphysik (Theorie), Universität Bonn, D-53115, Germany
2
Institut für Kernphysik (Theorie), Forschungszentrum Jülich, D-52425, Jülich, Germany
3
Institute of Nuclear Physics, Academy of Sciences of Uzbekistan, 132, Tashkent, Uzbekistan
4
Institute of Physics and Applied Physics, Yonsei University, 120-749, Seoul, Korea
5
Physics Department and Institute of Applied Physics, National University of Uzbekistan, 174, Tashkent, Uzbekistan
* e-mail: a.wirzba@fz-juelich.de
Received:
20
February
2008
Accepted:
7
April
2008
Published online:
29
April
2008
The neutron-proton mass difference in finite nuclei is studied in the framework of a medium-modified Skyrme model. The possible interplay between the effective nucleon mass in finite nuclei and the Nolen-Schiffer anomaly is discussed. In particular, we find that a correct description of the properties of mirror nuclei leads to a stringent restriction of possible modifications of the nucleon's effective mass in nuclei.
PACS: 12.39.Fe Chiral Lagrangians – / 21.10.Sf Coulomb energies, analogue states – / 21.65.-f Nuclear matter – / 14.20.Dh Protons and neutrons –
© Società Italiana di Fisica and Springer-Verlag, 2008
