Neutron-proton mass difference in nuclear matter

2006/11/30 by Ulf-G. Meißner, A. M. Rakhimov, A.M. Rakhimov +3 · 16 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Isospin #Lagrangian #Neutron #Nuclear matter #Nuclear physics #Nucleon #Particle physics #Particle physics theoretical and experimental studies #Physics #Proton #Quantum Chromodynamics and Particle Interactions #Theoretical physics #nucl-th

paper · pdf · doi:10.1140/epja/i2006-10274-6

published in The European Physical Journal A 31(3), 357-364 (Springer Science+Business Media) · 8 pages, 4 figures, revised version

arxiv created 2007/02/21 · openalex publication_date 2007/03/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

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.

Citations

• A unified field theory of mesons and baryons
• Nucleon deformation in finite nuclei
• S-wave meson-nucleon interactions and the meson mass in nuclear matter from chiral effective lagrangians
• The Nolen-Schiffer anomaly and isospin symmetry breaking in nuclear matter
• Chiral perturbation theory: Expansions in the mass of the strange quark
• A non-linear field theory
• Review of Particle Physics
• Quark masses