A QCD motivated model for soft interactions at high energies

Details A QCD motivated model for soft interactions at high energies A QCD motivated model for soft interactions at high energies

2008-05-19

arxiv.org/abs/0805.2799v2

Eur.Phys.J.C57:689-709,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

33pp,20 figures in eps files

Scientific paper

10.1140/epjc/s10052-008-0704-5

In this paper we develop an approach to soft scattering processes at high energies,which is based on two mechanisms: Good-Walker mechanism for low mass diffractionand multi-Pomeron interactions for high mass diffraction. The pricipal idea, that allows us to specify the theory for Pomeron interactions, is that the so called soft processes occur at rather short distances ($r^2 \propto 1 /^2 \propto \alpha'_\pom \approx 0.01 GeV^{-2}$), where perturbative QCD is valid. The value of the Pomeron slope $\alpha'_\pom $ was obtained from the fit to experimental data. Using this theoretical approach we suggest a model that fits all soft data in the ISR-Tevatron energy range, the total, elastic, single and double diffractive cross sections, including $t$ dependence of the differential elastic cross section, and the mass dependence of single diffraction. In this model we calculate the survival probability of diffractive Higgs production, and obtained a value for this observable, which is smaller than 1% at the LHC energy range.

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