Total Photonic and Hadronic Cross-sections

Details Total Photonic and Hadronic Cross-sections Total Photonic and Hadronic Cross-sections

2001-01-29

arxiv.org/abs/hep-ph/0101321v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 5 figures, LaTeX, uses aipproc.sty. To appear in the proceedings of Photon 2000, Ambelside, U.K., Aug 2000. The titl

Scientific paper

10.1063/1.1402829

We discuss total cross-sections within the context of the QCD calculable mini-jet model, highlighting its successes and failures. In particular we show its description of $\gamma \gamma \to hadrons$ and compare it with OPAL and L3 data. We extrapolate this result to $\gamma p$ total cross-sections and propose a phenomenological ans\"atz for virtual photon cross-sections. We point out that the good agreement with data obtained with the Eikonal Minijet Model should not hide the many uncertainties buried in the impact parameter distribution. A model obtained from Soft Gluon Summation is briefly discussed and its application to hadronic cross-sections is shown.

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