g-2 for e±, µ±

  1.   (g-2)/2 = ae = magnetic moment anomaly

  2.   QED power series in alpha (or e2)

  3.   100's of Feynman Diagrams

  4.   g-2 for e± at Univ. of Wash. in 1991 gives
    137.035 999 58(52) or 4ppb

  5.   µ-, µ- only 500ppb but 800X better constraint on new physics (but not alpha)

  6.   BNL E821 µ+ and µ-
    • Measurements
    • Std. Model disagreement at 2.8 s.d.!,
    • First sign of physics beyond SM???

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