Effects of isospin-symmetry violation on tests of the standard model using parity-violating electron scattering

Abstract

The effects of isospin-symmetry breaking on the observables for parity-violating electron scattering are investigated within the framework of the nuclear shell model for 12C, 16O, and 28Si. Contributions due to mixing with low-lying states as well as admixtures of 1p-1h configurations (via the radial wave functions) are accounted for. It is found that isospin-mixing can be important, and the consequences regarding precision tests of the standard model are addressed.

Comments: 12 pages, 2 postscript figures, RevTex. Submitted to Phys. Rev. Lett