Standard Model Tests Via Parity Violating Electron Scattering

A new generation of parity violating electron scattering measurements at high precision probe for physics beyond Standard Model. The experiments are complementary to high energy experiments and provide indirect access to TeV scale physics via electroweak one-loop effects. Data are presented from the recently completed SLAC experiment E159, which measured the weak charge of the electron Q(weak)(e). The Qweak experiment at Jefferson Lab will measure the weak charge of the proton Q(weak)(p) to an accuracy of +/- 4.3%.