POLARIZED-ELECTRON ELASTIC-SCATTERING ASYMMETRIES IN SU(2)XU(1)

The asymmetries in the elastic scattering of longitudinally polarized electrons by neutrons, protons, and deuterons are computed in detail within the SU(2) × U(1) gauge theory of the weak and electromagnetic interactions. The neutron-target asymmetries are several times larger, but are of the same sign as those for a proton target. Elastic polarized electron-deuteron scattering gives relatively large asymmetries of the opposite sign. At q2=1 GeV2 in the standard model with sin2θW=0.25, the asymmetries at high energy for proton, neutron, and deuteron targets are about -4 × 10-5, -13 × 10-5, and +9 × 10-5, respectively. © 1979 The American Physical Society.