Mb. Barbaro et al., PARITY-VIOLATING ELECTRON-SCATTERING FROM THE PION-CORRELATED RELATIVISTIC FERMI GAS, Nuclear physics. A, 569(4), 1994, pp. 701-731
Parity-violating quasielastic electron scattering is studied within th
e context of the relativistic Fermi gas and its extensions to include
the effects of pionic correlations and meson-exchange currents. The wo
rk builds on previous studies using the same model; here the part of t
he parity-violating asymmetry that contains axial-vector hadronic curr
ents is developed in detail using those previous studies and a link is
provided to the transverse vector-isovector response. Various integra
ted observables are constructed from the differential asymmetry. These
include an asymmetry averaged over the quasielastic peak, as well as
the difference of the asymmetry integrated to the left and right of th
e peak - the latter is shown to be optimal for bringing out the nature
of the pionic correlations. Special weighted integrals involving the
differential asymmetry and electromagnetic cross section, based on the
concepts of y-scaling and sum rules, are constructed and shown to be
suited to studies of the single-nucleon form factor content in the pro
blem, in particular, to determinations of the isovector/axial-vector a
nd electric strangeness form factors. Comparisons are also made with r
ecent predictions made on the basis of relativistic mean-field theory.