Neutral-current effects in elastic electron-nucleon scattering

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Abstract
Parity-violating effects are studied in considerable detail for elastic electron-nucleon scattering. Based on a unified Weinberg gauge model properly generalized to include nonstrange hadrons, we derive and discuss corrections to the Rosenbluth formula, and left-right asymmetries of longitudinally polarized electrons as well as nucleons. Any dependence of electron-nucleon scattering on the longitudinal polarization would be evidence of parity violation. The size of such neutral-current effects in general differs from that naively expected on purely dimensional grounds and strongly depends on the nucleon target used.