MAGNETIC-MOMENT OF THE W BOSON IN DIFFERENTIAL RENORMALIZATION

The anomalous contributions of dimensional regularization to the stati c features of the W boson are investigated by using differential renor malization in the proper-time representation. The magnetic (Delta K) a nd quadrupole (Delta Q) moments of the W boson are calculated by means of this procedure, which is invariant under ge and scale transformati ons. The results coincide with Delta K and Delta Q values obtained in proper-time regular ization. The W-boson contribution to Delta K is eq ual to the absolute value of the Callan-Symanzik beta function-that is , the anomaly-free magnetic moment of the W boson is found.