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

G. A. Miller and A. Schwenk
Phys. Rev. C 80, 064319 – Published 22 December 2009
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  • INTRODUCTION
  • TH APPROACH TO ISB CORRECTIONS
  • EXACT FORMALISM AND THEOREMS FOR ISB…
  • RELATION BETWEEN TH OPERATOR AND ISOSPIN
  • IMPLICATIONS FOR ISB CORRECTIONS
  • ACKNOWLEDGEMENTS
    • References

    Abstract

    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.

    • Received 20 October 2009

    DOI:https://doi.org/10.1103/PhysRevC.80.064319

    ©2009 American Physical Society

    Authors & Affiliations

    G. A. Miller1,* and A. Schwenk2,†

    • 1Department of Physics, University of Washington, Seattle, Washington 98195-1560, USA
    • 2TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, Canada V6T 2A3

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    Vol. 80, Iss. 6 — December 2009

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