Isospin corrections for superallowed Fermi {beta} decay in self-consistent relativistic random-phase approximation approaches
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871 (China)
- Institut de Physique Nucleaire, IN2P3-CNRS and Universite Paris-Sud, F-91406 Orsay Cedex (France)
Self-consistent random phase approximation (RPA) approaches in the relativistic framework are applied to calculate the isospin symmetry-breaking corrections {delta}{sub c} for the 0{sup +}{yields}0{sup +} superallowed transitions. It is found that the corrections {delta}{sub c} are sensitive to the proper treatments of the Coulomb mean field, but not so much to specific effective interactions. With these corrections {delta}{sub c}, the nucleus-independent Ft values are obtained in combination with the experimental ft values in the most recent survey and the improved radiative corrections. It is found that the constancy of the Ft values is satisfied for all effective interactions employed. Furthermore, the element V{sub ud} and unitarity of the Cabibbo-Kobayashi-Maskawa matrix are discussed.
- OSTI ID:
- 21289911
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 79, Issue 6; Other Information: DOI: 10.1103/PhysRevC.79.064316; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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