Neutron-proton mass difference in finite nuclei and the Nolen-Schiffer anomaly

Ulf-G. Meißner, A. M. Rakhimov, A. Wirzba, U. T. Yakhshiev

Published 2008-02-11, updated 2008-04-24Version 2

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.