6533b858fe1ef96bd12b63ac
RESEARCH PRODUCT
Isospin mixing in nuclei within the nuclear density functional theory.
Witold NazarewiczWitold NazarewiczWitold NazarewiczWojciech SatulaM. RafalskiJacek DobaczewskiJacek Dobaczewskisubject
PhysicsParticle physicsWeak isospinProtonNuclear TheoryHigh Energy Physics::PhenomenologyNuclear TheoryFOS: Physical sciencesGeneral Physics and AstronomyNuclear matterNuclear Theory (nucl-th)Nuclear physicsIsospinCoulombNeutronSymmetry breakingNuclear ExperimentNuclear densitydescription
We present the self-consistent, non-perturbative analysis of isospin mixing using the nuclear density functional approach and the rediagonalization of the Coulomb interaction in the good-isospin basis. The largest isospin-breaking effects are predicted for N = Z nuclei and they quickly fall with the neutron excess. The unphysical isospin violation on the mean-field level, caused by the neutron excess, is eliminated by the proposed method. We find a significant dependence of the magnitude of isospin breaking on the parametrization of the nuclear interaction term. A rough correlation has been found between the isospin mixing parameter and the difference of proton and neutron rms radii. The theoretical framework described in this study is well suited to describe a variety of phenomena associated with isospin violation in nuclei, in particular the isospin symmetry-breaking corrections to superallowed Fermi beta decays.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2009-03-06 | Physical review letters |