Scale-Invariant Lipatov Kernels from t-Channel Unitarity
High Energy Physics - Phenomenology
2008-02-03 v4
Abstract
The Lipatov equation can regarded as a reggeon Bethe-Salpeter equation in which higher-order reggeon interactions give higher-order kernels. Infra-red singular contributions in a general kernel are produced by t-channel nonsense states and the allowed kinematic forms are determined by unitarity. Ward identity and infra-red finiteness gauge invariance constraints then determine the corresponding scale-invariant part of a general higher-order kernel.
Keywords
Cite
@article{arxiv.hep-ph/9411362,
title = {Scale-Invariant Lipatov Kernels from t-Channel Unitarity},
author = {C. Coriano' and A. R. White},
journal= {arXiv preprint arXiv:hep-ph/9411362},
year = {2008}
}
Comments
11 pages in latex (ANH-HEP-CP-94-79), 14 figures uuencoded. Problems with the ps-encoding fixed