Neutron-proton mass difference in nuclear matter

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.

8 pages, 4 figures, revised version

References in corpus (9)

• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• The Cosmological Parameters 2006
• Pion-nucleon scattering in chiral perturbation theory II: Fourth order calculation
• In-medium chiral perturbation theory beyond the mean-field approximation
• 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
• Medium Modification of Nucleon Properties in Skyrme Model
• Electromagnetic form factors of bound nucleons revisited
• Nucleon deformation in finite nuclei

Cited by in corpus (11)

• Nucleon Effective Masses in Neutron-Rich Matter
• On Th229 and time-dependent fundamental constants
• Isospin splitting of nucleon effective mass from giant resonances in ${}^{208}$Pb
• Revisit of the neutron/proton ratio puzzle in intermediate-energy heavy-ion collisions
• Neutron-proton mass difference in finite nuclei and the Nolen-Schiffer anomaly
• Neutron-proton mass difference in isospin asymmetric nuclear matter
• A New Approach to Physics of Nuclei
• Neutron-proton effective mass splitting in neutron-rich matter
• Isospin dependence of nucleon effective masses in neutron-rich matter
• Singly heavy baryons in nuclear matter from an SU(3) chiral soliton model
• Constraining neutron-proton effective mass splitting through nuclear giant dipole resonance within transport approach