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The European Physical Journal C

, Volume 68, Issue 3–4, pp 425–446 | Cite as

Small x resummation in collinear factorisation

  • R. KirschnerEmail author
  • M. Segond
Regular Article - Theoretical Physics

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.

Keywords

Impact Factor Anomalous Dimension Shift Operator Deeply Virtual Compton Scat BFKL Equation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag / Società Italiana di Fisica 2010

Authors and Affiliations

  1. 1.Institut für Theoretische PhysikUniversität LeipzigLeipzigGermany

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