A new precision measurement of g - 2

A new precision measurement of the muon anomalous magnetic moment is being prepared at Brookhaven National Lab. By increasing the precision of this measurement by a factor of 20 over previous CERN measurements of the muon anomaly, the contribution from electroweak radiative corrections will be measured for the first time. In addition to contributions from virtual W and Z bosons, a precision measurement of the muon anomaly measures standard model contributions from QED (vacuum polarization) and the strong interaction (hadronic vacuum polarization). A muon g-2 measurement consistent with the standard model predictions at the level of sensitivity for E821 (0.35 ppm) will put limits on muon substructure up to TeV energy scales, and will put significant constraints on W boson substructure and a W anomalous magnetic moment. The E821 experiment will also provide the most sensitive search to date for a muon electric dipole moment, which (if nonzero) would violate CP