A new parton model for the soft interactions at high energies: two channel approximation
| Autor: | Gotsman, E., Levin, E., Potashnikova, I. |
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| Rok vydání: | 2019 |
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| Druh dokumentu: | Working Paper |
| Popis: | The primary goal of this paper is to describe the diffraction production using the model that takes into account the Pomeron interaction, and satisfies both $t$ and $s$ channel unitarity. We hope that these features will allow us to describe the diffraction production in a more convenient way than in CGC motivated models, that do not satisfy these unitarity constraints. Unfortunately, we show that both approaches are only able to describe half of the cross section for the single diffraction production, leaving the second half to be estimate of the large mass production in the Pomeron approach.The impact parameter dependance of the scattering amplitudes show that soft interactions at high energies measured at the LHC, have a much richer structure than presumed. We discuss the $t$-dependence of the elastic cross section in wide range of $|t|=0 \div 1 \,GeV^2 $. We show that in the kinemati region of the minimum, we cannot use approximate formulae to calculate the real part of the amplitude. The exact calculation in our model, shows that the real part is rather small, and it is necessary to include the Odderon contribution in order to describe the experimental data. Comment: 13pp. 19 figures in pdf files |
| Databáze: | arXiv |
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