Abstract
It has been proposed that the discrepancy between the partially conserved axial-current prediction and the nuclear shell-model calculations of the ratio CP/CA in the muon-capture reactions can be solved in the case of 28Si by introducing effective transition operators. Recently there has been experimental interest in also measuring the required angular correlations in 20Ne. Inspired by this, we have performed a shell-model analysis employing effective transition operators in the shell-model formalism for the transition 20Ne(0+g.s.)+µ- 20F(1+;1.057 MeV)+µ. Comparison of the calculated capture rates with existing data supports the use of effective transition operators. Based on our calculations, as soon as the experimental anisotropy data becomes available, the limits for the ratio CP/CA can be extracted.
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