Polarized parity violating electron scattering on He-3

We calculate the asymmetry parameters, A, and figures-of-merit for polarize d parity violating electron scattering from He-3 via the reaction, e(-) +(3 ) He --> e(-) +(3) He, We do this explicitly for incident electron energies of 1.0 GeV and 4.0 GeV, We find a sharp and unexpected variation in A due to cancellations between the weak and electromagnetic form factors caused b y the different q(2) dependences of these form factors, We find that at sma ll angles, the asymmetry may be obtained to reasonably high accuracy for al l energies considered and that the interesting region where the asymmetry h as its first maximum and minimum is accessible for electron energies of 1 G eV or higher. In addition we find that the asymmetry and figures-of-merit a re in the range of those for other proposed target nuclei, We also consider the possibility of strange quark contributions to the asymmetry and show t hat at the first maxima and minima, possible contributions of the strange q uark current vector form factors cause large variations in the asymmetry wh ich might be observed, (C) 1999 Elsevier Science B.V.