New physics scales and anomalous magnetic moment
  Violation of chiral symmetry together with change of mass sign allows a linear correction in inverse power of new physics scale to the anomalous magnetic moment of muon. In this light we analyse alternative models showing in particular that grand unification, supersymmetry and muon substructure may explain the discrepancy between the experimental value of the muon anomaly and the standard model calculation. 
Helder Chavez and Luis Masperi