XAYAVONG, L.; SMIRNOVA, N.A.; BENDER, M.; BENNACEUR, K.

doi:10.5506/APhysPolBSupp.10.285

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XAYAVONG, L.
Centre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]

SMIRNOVA, N.A.
Centre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]

BENDER, M.
Centre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
Institut de Physique Nucléaire de Lyon [IPNL]

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Communication dans un congrès

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Acta Phys.Polon.Supp., Acta Phys.Polon.Supp., 2016-09-27, Kazimierz Dolny. 2017, vol. 10, p. 285

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We investigate the radial-overlap part of the isospin-symmetry breaking correction to superallowed $0^+\to 0^+$-decay using the shell-model approach similar to that of Refs. [1, 2]. The 8 sd-shell emitters with masses between $A=22$ and $A=38$ have been re-examined. The Fermi matrix element is evaluated with realistic spherical single-particle wave functions, obtained from spherical Woods-Saxon (WS) or Hartree-Fock (HF) potentials, fine-tuned to reproduce the experimental data on charge radii and separation energies for nuclei of interest. The elaborated adjustment procedure removes any sensitivity of the correction to a specific parametrisation of the WS potential or to various versions of the Skyrme interaction. The present results are generally in good agreement with those reported in Refs. [3, 4]. At the same time, we find that the calculations with HF wave functions result in systematically lower values of the correction.< Leer menos

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21.60.Cs

21.10.Pc

21.10.Jx

23.40.-s

23.40.Bw

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Shell-model calculation of isospin-symmetry breaking correction to superallowed Fermi beta-decay

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