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Neutron-proton mass difference in nuclear matter

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

Isospin-breaking effects in nuclear matter are studied in the framework of a medium-modified Skyrme model. The proposed effective Lagrangian incorporates both the medium influence of the surrounding nuclear environment on the single nucleon properties and an explicit isospin-breaking effect in the mesonic sector. The approach predicts that the neutron-proton mass difference decreases in isospin-symmetric nuclear matter but by a very small amount only.

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Ulf-G. Meißner, A. M. Rakhimov, A. Wirzba, U. T. Yakhshiev. 2007-02-21. Neutron-proton mass difference in nuclear matter. https://doi.org/10.1140/epja%2Fi2006-10274-6

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