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Article overview
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Nuclear isospin mixing and elastic parity-violating electron scattering | O. Moreno
; P. Sarriguren
; E. Moya de Guerra
; J.M. Udias
; T.W. Donnelly
; I. Sick
; | Date: |
3 Jun 2008 | Abstract: | The influence of nuclear isospin mixing on parity-violating elastic electron
scattering is studied for the even-even, N=Z nuclei 12C, 24Mg, 28Si, and 32S.
Their ground-state wave functions have been obtained using a self-consistent
axially-symmetric mean-field approximation with density-dependent effective
two-body Skyrme interactions. Some differences from previous shell-model
calculations appear for the isovector Coulomb form factors which play a role in
determining the parity-violating asymmetry. To gain an understanding of how
these differences arise, the results have been expanded in a spherical harmonic
oscillator basis. Strangeness contributions to the asymmetry are also studied
in concert with the isospin mixing contributions. Results are obtained within
the distorted-wave Born approximation for comparison with potential future
experimental studies of parity-violating electron scattering. To this end, for
each nucleus the focus is placed on kinematic ranges where the signal
(isospin-mixing effects on the parity-violating asymmetry) and the experimental
figure-of-merit are maximized. | Source: | arXiv, 0806.0552 | Services: | Forum | Review | PDF | Favorites |
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