The high energy limit of QCD at two loops

Details The high energy limit of QCD at two loops The high energy limit of QCD at two loops

2001-09-04

arxiv.org/abs/hep-ph/0109028v2

JHEP 0110:035,2001

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 3 postscript figures, JHEP style, discussion added

Scientific paper

10.1088/1126-6708/2001/10/035

By taking the high-energy limit of the two-loop amplitudes for parton-parton scattering, we have tested the validity of Fadin-Lipatov's ansatz for parton-parton scattering in the high-energy limit. As expected, we have found that it holds at LL and NLL accuracy, and hence we have independently re-evaluated the two-loop Regge trajectory, finding full agreement with the previous results by Fadin and collaborators. We have found, though, that the universality implied by the ansatz is violated at the next-to-next-to-leading logarithmic level.

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