Brodsky et al's defence does not work
Abstract
In their defence of "maximum conformality" methods, Brodsky et al make the astonishing claim that any RG transformation a'=a(1+V1 a + ...) in QCD must have V1 proportional to b=(33-2nf)/6. It is well known that this is not true. I emphasize again the correctness and central importance of the Celmaster-Gonsalves relation for the prescription dependence of the Lambda parameter.
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