On the n -> 0 limit of gammagg(a) in QCD
J. F. Bennett, J. A. Gracey
Abstract
We consider the n -> 0 limit of the DGLAP splitting function gammagg(a) at all orders in the strong coupling constant, a, by analysing the leading order large Nf form of the associated d-dimensional critical exponent. We show that for unpolarized scattering the pole at n = 0 which appears in successive orders in perturbation theory is absent in the resummed expression.
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