The QCD beta-function at O(1/N_f)

Details The QCD beta-function at O(1/N_f) The QCD beta-function at O(1/N_f)

1996-02-02

arxiv.org/abs/hep-ph/9602214v1

Phys.Lett. B373 (1996) 178-184

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages latex, 1 figure

Scientific paper

10.1016/0370-2693(96)00105-0

The leading order coefficients of the beta-function of QCD are computed in a large N_f expansion. They are in agreement with the three loop MSbar calculation. The method involves computing the anomalous dimension of the operator (G^2_{mu nu})^2 at the d-dimensional fixed point in the non-abelian Thirring model to which QCD is equaivalent in this limit. The effect the O(1/N_f) corrections have on the location of the infrared stable fixed point for a range of N_f is also examined.

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