Relativistic and Nuclear Structure Effects in Parity-Violating Quasielastic Electron Scattering
C. J. Horowitz, J. Piekarewicz
Abstract
The parity violating longitudinal asymmetry A is calculated for quasielastic electron scattering. We use a variety of relativistic mean field models for the response of nuclear matter and 12C at a momentum transfer of q=550 MeV/c. Relativistic effects from a reduced nucleon mass, RPA correlations and vacuum polarization can all change A by a relatively large amount. These large nuclear structure corrections could make it impossible to extract strange quark matrix elements or radiative corrections to weak axial currents.
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