NLO Corrections to the γ* Impact Factor: First Numerical Results for the Real Corrections to γ*_L

Details NLO Corrections to the γ* Impact Factor: First Numerical Results for the Real Corrections to γ*_L NLO Corrections to the γ* Impact Factor: First Numerical Results for the Real Corrections to γ*_L

2004-07-05

arxiv.org/abs/hep-ph/0407051v2

Phys.Rev. D70 (2004) 114003

Physics

High Energy Physics

High Energy Physics - Phenomenology

27 pages, 5 figures, uses revtex4; misprint in fig.4,5 and typos corrected; for associated files, see http://www.desy.de/uni

Scientific paper

10.1103/PhysRevD.70.114003

We analytically perform the transverse momentum integrations in the real corrections to the longitudinal \gamma*_L impact factor. The resulting integrals are Feynman parameter integrals, and we provide a MATHEMATICA file which contains the integrands. The remaining integrals are carried out numerically. We perform a numerical test, and we compute those parts of the impact factor which depend upon the energy scale s_0: they are found to be negative and, with decreasing values of s_0, their absolute value increases.

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