We report measurements of asymmetries in quasielastic scattering of polarized electrons from polarized He3 at Q2=-0.2 GeV/c)2. We measure ATe=(-2.6+0.9+0.46)% and ATLe=(+1.75+1.2+0.31)%. The asymmetry ATe depends predominantly on the previously measured neutron magnetic form factor and provides a test of theories of spin-dependent quasielastic scattering. Our result for ATe is consistent with a previously reported measurement and suggests that the current theoretical picture is incomplete and final-state-interaction and meson-exchange corrections are necessary if the electric form factor of the neutron is to be reliably extracted from the asymmetry of ATLe.
ASJC Scopus subject areas
- Physics and Astronomy(all)