Total photoproduction cross-section at very high energy

Details Total photoproduction cross-section at very high energy Total photoproduction cross-section at very high energy

2008-12-05

arxiv.org/abs/0812.1065v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, 9 figures. Accepted for publication in EPJC. Changes concern added references, clarifications of the Soft Gluon Resu

Scientific paper

In this paper we apply to photoproduction total cross-section a model we have proposed for purely hadronic processes and which is based on QCD mini-jets and soft gluon re-summation. We compare the predictions of our model with the HERA data as well as with other models. For cosmic rays, our model predicts substantially higher cross-sections at TeV energies than models based on factorization but lower than models based on mini-jets alone, without soft gluons. We discuss the origin of this difference.

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