Resummation of small x contributions to hard-scattering amplitudes

Details Resummation of small x contributions to hard-scattering amplitudes Resummation of small x contributions to hard-scattering amplitudes

2009-09-24

arxiv.org/abs/0909.4476v1

Nucl.Phys.Proc.Suppl.198:10-16,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 5 figures, talk given at the HS09 conference

Scientific paper

10.1016/j.nuclphysbps.2009.12.00

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 log x approximation. The corresponding expression by Catani and Hautmann (1994) has to be corrected. The significance of the correction is demonstrated in the examples of structure function F_L and of exclusive electroproduction.

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