Soft processes at high energy without soft Pomeron: a QCD motivated model

Details Soft processes at high energy without soft Pomeron: a QCD motivated model Soft processes at high energy without soft Pomeron: a QCD motivated model

2008-09-23

arxiv.org/abs/0809.3886v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

33pages, 16 figures

Scientific paper

In this paper we develop a QCD motivated model for both hard and soft interactions at high energies. In this model the long distance behavior of the scattering amplitude is determined by the approximate solution to the non-linear evolution equation for parton system in the saturation domain. All phenomenological parameters for dipole-proton interaction were fitted from the deep inelastic scattering data and the soft processes are described with only one new parameter, related to the wave function of hadron. It turns out that we do not need to introduce the so called soft Pomeron that has been used in high energy phenomenology for four decades. The model described all data on soft interactions: the values of total, elastic and diffractive cross sections as well as their $s$ and $t$ behavior. The value for the survival probability of the diffractive Higgs production is calculated being less 1% for the LHC energy range.

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