v 2 8 J ul 1 99 6 LTH 375 hep - ph / 9606323 N = 1 supersymmetry and the three loop gauge β - function


We calculate the three loop gauge β-function for an abelian N = 1 supersymmetric gauge theory, using DRED. We construct a coupling constant redefinition that relates the result to the corresponding term in the NSVZ β-function, and by generalising this redefinition to the non-abelian case we derive the DRED three loop gauge β-function for the non-abelian… (More)