Chirality Violation in QCD Reggeon Interactions

Details Chirality Violation in QCD Reggeon Interactions Chirality Violation in QCD Reggeon Interactions

2002-05-03

arxiv.org/abs/hep-ph/0205036v2

Phys.Rev. D66 (2002) 045009

Physics

High Energy Physics

High Energy Physics - Phenomenology

52 pages, 29 PS figures in the text

Scientific paper

10.1103/PhysRevD.66.045009

The appearance of the triangle graph infra-red axial anomaly in reduced quark loops contributing to QCD triple-regge interactions is studied. In a dispersion relation formalism, the anomaly can only be present in the contributions of unphysical triple discontinuities. In this paper an asymptotic discontinuity analysis is applied to high-order feynman diagrams to show that the anomaly does indeed occur in sufficiently high-order reggeized gluon interactions. The reggeon states involved must contain reggeized gluon combinations with the quantum numbers of the anomaly (winding-number) current. A direct connection with the well-known U(1) problem is thus established. Closely related diagrams that contribute to the pion/pomeron and triple pomeron couplings in color superconducting QCD are also discussed.

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