Scale-Invariant Lipatov Kernels from t-Channel Unitarity

Details Scale-Invariant Lipatov Kernels from t-Channel Unitarity Scale-Invariant Lipatov Kernels from t-Channel Unitarity

1994-11-23

arxiv.org/abs/hep-ph/9411362v4

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages in latex (ANH-HEP-CP-94-79), 14 figures uuencoded. Problems with the ps-encoding fixed

Scientific paper

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.

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