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

TL;DR

This paper investigates how the neutron-proton mass difference in finite nuclei relates to the Nolen-Schiffer anomaly using a medium-modified Skyrme model, revealing constraints on nucleon effective mass modifications.

Contribution

It introduces a detailed analysis of the neutron-proton mass difference in finite nuclei within a medium-modified Skyrme model, linking it to the Nolen-Schiffer anomaly and nucleon effective mass.

Findings

Proper description of mirror nuclei constrains nucleon effective mass modifications

The model provides insights into the interplay between nucleon mass and nuclear properties

Results suggest specific restrictions on medium modifications of nucleon mass

Abstract

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.