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Scale-Invariant Lipatov Kernels from t-Channel Unitarity

1994/11/23 by Claudio Corianò, C. Coriano', Coriano', C. +3
Physics and Astronomy · #Atomic and Subatomic Physics Research #Cold Atom Physics and Bose-Einstein Condensates #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Quantum Mechanics and Non-Hermitian Physics #hep-ph

paper · pdf · doi:10.48550/arxiv.hep-ph/9411362

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

openalex publication_date 1994/11/23 · arxiv created 1994/11/26 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

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.

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