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Total Photonic and Hadronic Cross-sections

Rohini M. Godbole, A. Grau, G. Pancheri

hep-pharXiv:hep-ph/0101321

Abstract

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 γγ hadrons and compare it with OPAL and L3 data. We extrapolate this result to γp total cross-sections and propose a phenomenological ansätz 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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