Small x resummation in collinear factorisation

Abstract

The summation of the small x-corrections to hard-scattering QCD amplitudes by collinear factorisation method is reconsidered and the K-factor is derived in leading ln x approximation with a result differing from the corresponding expression by Catani and Hautmann (Nucl. Phys. B 427, 475, 1994). The significance of the difference is demonstrated in the examples of structure function F_L and of exclusive vector meson electroproduction. The formulation covers the channels of non-vanishing conformal spin n paving the way for new applications.

34 pages, 6 figures

References in corpus (5)

• Higgs production via gluon-gluon fusion with finite top mass beyond next-to-leading order
• A Global Fit to Scattering Data with NLL BFKL Resummations
• High Energy Resummation of Drell-Yan Processes
• Minimal Subtraction vs. Physical Factorisation Schemes in Small-x QCD
• High-energy resummation in direct photon production

Cited by in corpus (6)

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• Inclusive production of a pair of hadrons separated by a large interval of rapidity in proton collisions
• The pion pole in hard exclusive vector-meson leptoproduction
• Small x resummation of rapidity distributions: the case of Higgs production
• Matching next-to-leading-order and high-energy-resummed calculations of heavy-quarkonium-hadroproduction cross sections