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arXiv · hep-ph/0109028

The high energy limit of QCD at two loops

Vittorio Del Duca·E. W. N. Glover
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Abstract

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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Vittorio Del Duca, E. W. N. Glover. 2001-10-10. The high energy limit of QCD at two loops. https://doi.org/10.1088/1126-6708%2F2001%2F10%2F035

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