Abstract
The determinations of $|{V}_{\mathrm{ud}}{|}^{2}$ with super-allowed Fermi $\ensuremath{\beta}$ decay in nuclei and of the weak charge of cesium in atomic parity violation deviate from the standard model predicitions by $2\ensuremath{\sigma}$ or more. In both cases, the standard model overpredicts the magnitudes of the relevant observables. I discuss the implications of these results for R-parity violating (RPV) extensions of the minimal supersymmetric standard model. I also explore the possible consequences for RPV supersymmetry of prospective future low-energy electroweak measurements.
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