Scheme dependence and the NSVZ β-function

I. Jack , D.R.T. Jones , C.G. North

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classification ✦ hep-ph

keywords betadredformsfunctiongaugensvzabelianable

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We investigate the connection between the NSVZ and the DRED forms of the gauge $\beta$-function in an $N=1$ supersymmetric gauge theory. We construct a coupling constant redefinition that relates the two forms up to four loops. By abelian calculations, we are able to infer the complete non-abelian form of $\beta_g^{(3)DRED}$, and also $\beta_g^{(4)DRED}$ except for one undetermined parameter.

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