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Toward a Consistent Description of the PNC Experiments in A=18-21 Nuclei

Mihai Horoi·B. Alex Brown
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Abstract

The experimental PNC results in $^{18}$F, $^{19}$F, $^{21}$Ne and the current theoretical analysis show a discrepancy . If one interprets the small limit of the experimentally extracted PNC matrix element for $^{21}$Ne as a destructive interference between the isoscalar and the isovector contribution, then it is difficult to understand why the isovector contribution in $^{18}$F is so small while the isoscalar + isovector contribution in $^{19}$F is relatively large. In order to understand the origin of this discrepancy a comparison of the calculated PNC matrix elements was performed. It is shown that the $^{18}$F and $^{21}$Ne matrix elements contain important contributions from 3$\hbar ω$ and 4$\hbar ω$ configuration and that the (0+1)$\hbar ω$ calculations give distorted results.

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Mihai Horoi, B. Alex Brown. 1994-05-24. Toward a Consistent Description of the PNC Experiments in A=18-21 Nuclei. https://doi.org/10.1103/physrevlett.74.231

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