Isospin mixing in nuclei around N=Z and the superallowed beta-decay

Details Isospin mixing in nuclei around N=Z and the superallowed beta-decay Isospin mixing in nuclei around N=Z and the superallowed beta-decay

2010-10-15

arxiv.org/abs/1010.3099v1

Acta Phys.Polon.B42:415-426,2011

Physics

Nuclear Physics

Nuclear Theory

Presented at the International Conference on Nuclear Structure "Nuclear Landscape at the Limits", Zakopane, Poland, 2010

Scientific paper

10.5506/APhysPolB.42.415

Theoretical approaches that use one-body densities as dynamical variables, such as Hartree-Fock or the density functional theory (DFT), break isospin symmetry both explicitly, by virtue of charge-dependent interactions, and spontaneously. To restore the spontaneously broken isospin symmetry, we implemented the isospin-projection scheme on top of the Skyrme-DFT approach. This development allows for consistent treatment of isospin mixing in both ground and exited nuclear states. In this study, we apply this method to evaluate the isospin impurities in ground states of even-even and odd-odd N~Z nuclei. By including simultaneous isospin and angular-momentum projection, we compute the isospin-breaking corrections to the 0+ --> 0+ superallowed beta-decay.

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