Isovector density and isospin impurity in ${}^{40}\mathrm{Ca}$

Abstract

We study isoscalar (IS) and isovector (IV) densities in ${}^{40}\mathrm{Ca}$ in comparison with theoretical densities calculated by Skyrme Hartree-Fock (HF) models. The charge symmetry breaking and the charge independence breaking forces are introduced to study the effect on the IV density. The effect of isospin mixing in the ground-state density is examined by using the particle-vibration coupling model taking into account the collective IV giant monopole excitation. We show a clear correlations in the IV density and isospin impurity of ${}^{40}\mathrm{Ca}$ within the HF and the particle-vibration coupling model. We extract for the first time the experimental information of isospin impurity from the magnitude of IV density.

6 pages, 7 figures, 1 table for main text; 4 pages, 7 figures, 2 tables for supplemental materials

References in corpus (3)

• Charge Symmetry Breaking and QCD
• Proton elastic scattering from tin isotopes at 295 MeV and systematic change of neutron density distributions
• Coulomb corrections to superallowed beta decay in nuclei

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