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arXiv · 0909.4476

Resummation of small x contributions to hard-scattering amplitudes

R. Kirschner·M. Segond
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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.

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R. Kirschner, M. Segond. 2009-09-24. Resummation of small x contributions to hard-scattering amplitudes. https://doi.org/10.1016/j.nuclphysbps.2009.12.003

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