Total γ* p cross section

E. Gotsman*, E. Levin, U. Maor, E. Naftali

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

22 Scopus citations


This paper shows that the approach based on Gribov's ideas for photon-proton interaction is able to describe the experimental data over a wide range of photon virtualities Q2 = 0-100 GeV2 and energies √s = W = 3-300 GeV. A simple model is suggested which provides a quantitative way of describing the matching between short and long distances (between "soft" and "hard" processes) in photon-proton interaction at high energy. The main results of our analysis are: (i) the values of the separation parameters differentiating the soft and hard interactions are determined; (ii) the additive quark model can be used to calculate the soft contribution to the photon-proton interaction; (iii) a good description of the ratio σLT is obtained; and (iv) a onsiderable contribution of the soft process at large Q2, and of hard processes at small Q2 was found.

Original languageEnglish
Pages (from-to)689-696
Number of pages8
JournalEuropean Physical Journal C
Issue number4
StatePublished - 1999


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