HAPPEX parity violation experiments: status and plans

D.S. Armstrong

College of William & Mary

The HAPPEX program at Jefferson Lab of parity-violation in elastic electron scattering will be presented. The results and implications of the recently completed HAPPEX I measurement on the proton at Q2 = 0.48 will be briefly reviewed. The status and plans will be presented for the upcoming HAPPEX II measurement on the proton at Q2 = 0.10, as well as the upcoming measurement with a 4He target at the same momentum transfer. These two measurements will be primarily sensitive to the strangeness radius parameter, however the combination of the two experiments will also provide information on the strange contribution to the proton's magnetic moment.