Isospin-symmetry-breaking corrections to superallowed Fermi beta decay: Radial excitations

Details Isospin-symmetry-breaking corrections to superallowed Fermi beta decay: Radial excitations Isospin-symmetry-breaking corrections to superallowed Fermi beta decay: Radial excitations

2009-10-15

arxiv.org/abs/0910.2790v1

Phys.Rev.C80:064319,2009

Physics

Nuclear Physics

Nuclear Theory

5 pages; NT@UW-09-22

Scientific paper

10.1103/PhysRevC.80.064319

Based on an exact formalism, we study the effects of isospin-symmetry-breaking interactions on superallowed 0+ -> 0+ transitions. We calculate the second-order renormalization of the Fermi matrix element due to radial contributions and show that radial excitations neglected in the treatment of Towner and Hardy are significant. These are estimated to decrease the isospin-symmetry-breaking corrections. Our results provide a correction term that can be included in existing approaches.

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