1. t-channel unitarity and photon cross sections
- Author
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E. Martynov, Jean-René Cudell, and Gregory Soyez
- Subjects
Physics ,Nuclear and High Energy Physics ,Particle physics ,Unitarity ,High Energy Physics::Phenomenology ,FOS: Physical sciences ,Elementary particle ,HERA ,Photon structure function ,Massless particle ,Scattering amplitude ,High Energy Physics - Phenomenology ,High Energy Physics - Phenomenology (hep-ph) ,High Energy Physics::Experiment ,Boson ,S-matrix - Abstract
We analyse the consequences of t-channel unitarity for the photon hadronic cross sections. We show that gamma(*)p and gamma(*) gamma(*) elastic amplitudes must include the complex-j plane singularities associated with hadronic elastic amplitudes, and give the characteristics of possible new singularities. We also show that several different models of hadronic total cross sections can be used to predict the LEP data from the HERA measurements., 36 pages, LaTeX, 15 eps figures, needs elsart.cls (included). The theoretical part has been reworked. The conclusions and applications remain unaffected
- Published
- 2004
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