Energy Scale and Coherence Effects in small-x Equations

Details Energy Scale and Coherence Effects in small-x Equations Energy Scale and Coherence Effects in small-x Equations

1998-01-16

arxiv.org/abs/hep-ph/9801322v1

Phys.Lett.B429:363-368,1998

Physics

High Energy Physics

High Energy Physics - Phenomenology

Figure available on request

Scientific paper

10.1016/S0370-2693(98)00249-4

I consider the next-to-leading,high-energy cluster expansion of large-k double-jet production in QCD, and I determine the corresponding one-loop quark and gluon impact factors, for a self-consistent energy scale. The result shows that coherent angular ordering of emitted gluons holds for hard emission also, and singles out a scale which is essentially the largest virtuality in the process. Both remarks are relevant for the precise deter- mination of the BFKL kernel at the next-to-leading level.

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