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QCD Phase Shifts and Rising Total Cross-Sections

C. S. Lam
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Abstract

An attempt is made in QCD to explain the growth of total cross-sections with energy, without violating the Froissart bound. This is achieved by computing the phase shifts of elastic scatterings of partons rather than their amplitudes. To render that possible a general formalism of phase-shifts in QCD is developed. Computed to two-loop order, agreements with hadronic and virtual-photon total cross-sections are quite satisfactory. Predications for the slower rate of growth at higher energies are also presented.

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C. S. Lam. 1998-05-04. QCD Phase Shifts and Rising Total Cross-Sections. https://arxiv.org/abs/hep-ph/9804463

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