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Large-basis no-core shell-model calculations and their application to10C →10B fermi beta decay

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Abstract

We use a 4ħΩ shell-model calculation with a two-body effective interaction derived microscopically from the Reid93 potential to calculate the isospin-mixing correction for the10C→10B superallowed Fermi transition. The effective interaction takes into account the Coulomb potential as well as the charge dependence ofT=1 partial waves. Our results suggest the isospin-mixing correctionδ c ≈ 0.1%, which is compatible with previous calculations obtained by other methods. The obtainedδ C correction is about a factor of four too small to obtain unitarity of the Cabibbo-Kobayashi-Maskawa matrix with the present experimental data.

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Author notes

  1. P. Navrátil

    Present address: the Institute of Nuclear Physics, Academy of Sciences of the Czech Republic, 250 68, Řež near Prague, Czech Republic

Authors and Affiliations

  1. Department of Physics, University of Arizona, 85721, Tucson, Arizona

    B. R. Barrett & P. Navrátil

  2. Department of Physics and Astronomy, Louisiana State University, 202 Nicholson Hall, 70803-4001, Baton Rouge, LA, U.S.A.

    W. E. Ormand

Authors
  1. B. R. Barrett
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  2. P. Navrátil
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  3. W. E. Ormand
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Additional information

This work is supported in part by NSF grant No. PHY96-05192.

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Barrett, B.R., Navrátil, P. & Ormand, W.E. Large-basis no-core shell-model calculations and their application to10C →10B fermi beta decay. Czech J Phys 48, 691–696 (1998). https://doi.org/10.1023/A:1021497807788

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  • DOI: https://doi.org/10.1023/A:1021497807788

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