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arXiv · hep-ph/9911519

Soft High Energy Scattering in Nonperturbative QCD

E. R. Berger
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Abstract

In this report diffractive high energy reactions are discussed in a functional integral approach where hadronic amplitudes are calculated from vacuum expectation values of lightlike Wegner-Wilson loops. In the first part we calculate elastic differential cross sections for high energy and small momentum transfer elastic proton-proton (pp) scattering which are in reasonable agreement with the experimental data. In the second part we consider exclusive $π^0$ production in ep-scattering. At high energies photon and odderon exchange contribute to this reaction. We show that odderon exchange leads to a much larger inelastic than elastic $π^0$ production cross section, dominating the $γ$ contribution by orders of magnitude. Observing our process at HERA would establish the soft odderon.

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E. R. Berger. 1999-11-29. Soft High Energy Scattering in Nonperturbative QCD. https://doi.org/10.1142/9789812817624_0016

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