QCD Phase Shifts and Rising Total Cross-Sections

Details QCD Phase Shifts and Rising Total Cross-Sections QCD Phase Shifts and Rising Total Cross-Sections

1998-04-30

arxiv.org/abs/hep-ph/9804463v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages with three postscript figures, composed in the Revtex preprint format. Some misprints of a previous version have been

Scientific paper

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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