# Total Photonic and Hadronic Cross-sections

Godbole, Rohini M and Grau, A and Pancheri, G (2001) Total Photonic and Hadronic Cross-sections. [Preprint]

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## 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 $\gamma \gamma \to hadrons$ and compare it with OPAL and L3 data. We extrapolate this result to $\gamma p$ total cross-sections and propose a phenomenological ansatz 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.

Item Type: Preprint Division of Physical & Mathematical Sciences > Centre for Theoretical Studies 12 Aug 2004 19 Sep 2010 04:13 http://eprints.iisc.ernet.in/id/eprint/814