2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/49570The U(1) triangle anomaly is present, as an infra-red divergence, in the six-reggeon triple-regge interaction vertex obtained from a maximally non-planar Feynman diagram in the full triple-regge limit of three-to-three quark scattering.7 pages, with 5 PS figures in the text. Talk presented at the XXIX International Symposium on Multiparticle Dynamics ``QCD & Multiparticle Production'', Brown University, Providence, August 9-13, 1999High Energy Physics - Phenomenologytext