A two-channel extension of the 'new parton model' fits total and elastic proton cross sections, reproduces only half of single diffraction, and requires an Odderon contribution to describe the measured elastic t-distribution.
A new parton model for the soft interactions at high energies
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abstract
We propose a new parton model and demonstrate that the model describes the relevant experimental data at high energies. The model is based on Pomeron calculus in 1+1 space-time dimensions, as suggested in Ref. [18] and on simple assumptions regarding the hadron structure, related to the impact parameter dependence of the scattering amplitude. This parton model evolves from QCD, assuming that the unknown non-perturbative corrections lead to fixing size of the interacting dipoles. The advantage of this approach is that it satisfies both t-channel and s-channel unitarity, and can be used for summing all diagrams of Pomeron interactions, including Pomeron loops. We can use this approach for all reactions: dilute-dilute (hadron-hadron), dilute-dense (hadron-nucleus) and dense-dense (nucleus-nucleus)for the scattering of parton systems. Unfortunately, we are still far from being able to tackle this problem in the effective QCD theory at high energy (i.e. in the CGC /saturation approach).
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2019 1verdicts
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A new parton model for the soft interactions at high energies: two channel approximation
A two-channel extension of the 'new parton model' fits total and elastic proton cross sections, reproduces only half of single diffraction, and requires an Odderon contribution to describe the measured elastic t-distribution.