Qweak Experiment Overview Forward-angle elastic scattering 1.16 GeV e's from proton at mean 8.4  in the lab frame  Q 2 = 0.026 (GeV/c) 2 Want : 6 ppb (2%) on A z (  4% on Q w  0.3% on sin 2  W ) Expand on success/techniques of JLab PVES program Runs June 2010 to May 2012 –Final expt.
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