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arXiv · hep-ph/0209281

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

J. R. Cudell·E. Martynov·G. Soyez
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Abstract

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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J. R. Cudell, E. Martynov, G. Soyez. 2002-09-24. Consequences of t-channel unitarity for gamma(*)p and gamma(*) gamma(*) amplitudes. https://doi.org/10.1016/s0920-5632(03)90585-8

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