On the Calculation of the NLO Virtual Photon Impact Factor
High Energy Physics - Phenomenology
2009-11-07 v2
Abstract
The definition of the virtual photon impact factor involves the integration of the s-channel discontinuity of the photon-Reggeon scattering amplitude over the right cut. It permits to formulate a new approach for the calculation of the impact factor based on analytical properties of the amplitude in question. In the next-to-leading order it may give a possibility for considerable simplification of the calculation. We have shown that a part of the diagrams contributing to the impact factor can be treated without their real calculation.
Cite
@article{arxiv.hep-ph/0210406,
title = {On the Calculation of the NLO Virtual Photon Impact Factor},
author = {V. S. Fadin and D. Yu. Ivanov and M. I. Kotsky},
journal= {arXiv preprint arXiv:hep-ph/0210406},
year = {2009}
}
Comments
18 pages, latex, axodraw.sty for figures, version to appear in Nucl. Phys. B