Consequences of t-channel unitarity for gamma(*)p and gamma(*) gamma(*) amplitudes

Details Consequences of t-channel unitarity for gamma(*)p and gamma(*) gamma(*) amplitudes Consequences of t-channel unitarity for gamma(*)p and gamma(*) gamma(*) amplitudes

2002-09-24

arxiv.org/abs/hep-ph/0209281v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

3 pages, 3 figures, to appear in the proceedings of the 31st International Conference on High Energy Physics (ICHEP 2002), Ams

Scientific paper

10.1016/S0920-5632(03)90585-8

We show that t-channel unitarity constraints make it possible to obtain the
photon-photon cross sections from the photon-proton and proton-proton cross
sections, for Q2<150 GeV2. In order to do so, one must postulate the existence
of double-pole or triple-pole singularities in the complex j plane.

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