On the Analytic Structure of Hadronic Amplitudes in QCD

Details On the Analytic Structure of Hadronic Amplitudes in QCD On the Analytic Structure of Hadronic Amplitudes in QCD

1992-12-21

arxiv.org/abs/hep-ph/9212292v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, Latex, EFI 92-54

Scientific paper

Analytic properties of hadronic amplitudes are discussed within the framework of QCD as formulated on the basis of the BRST algebra. Local, composite fields are introduced for hadrons. Given confinement, it is shown that hadronic amplitudes have no thresholds or structure singularities (anomalous thresholds) which are directly related to the underlying quark-gluon structure. In contrast, general amplitudes of QCD must have singularities in channels with non-zero color quantum number, which can be related to unphysical states.

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