Resummation of small x contributions to hard-scattering amplitudes
arXiv:0909.4476 · doi:10.1016/j.nuclphysbps.2009.12.003
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 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.
7 pages, 5 figures, talk given at the HS09 conference