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arXiv · 1507.03442

Diffractive Electromagnetic Processes from a Regge Point of View

H. G. Dosch·E. Ferreira
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Abstract

The energy dependence of the cross sections for electromagnetic diffractive processes can be well described by a single power, $W^\delta$. For $J/\psi$ photoproduction this holds in the range from 20 GeV to 2 TeV. This feature is most easily explained by a single pole in the angular momentum plane which depends on the scale of the process, at least in a certain range of values of the momentum transfer. It is shown that this assumption allows a unified description of all electromagnetic elastic diffractive processes. We also discuss an alternative model with an energy dependent dipole cross section, which is compatible with the data up to 2 TeV and which shows an energy behaviour typical for a cut in the angular momentum plane.

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H. G. Dosch, E. Ferreira. 2015-07-13. Diffractive Electromagnetic Processes from a Regge Point of View. https://arxiv.org/abs/1507.03442

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