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Analysis of pC-interactions at Momentum of 4.2 GeV/c Within Framework of FRITIOF and Cascade Models

A. Galoyan·E. N. Kladnitskaya·O. V. Rogachevskii·R. Togoo·V. V. Uzhinskii
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Abstract

Experimental data on multiplicities and kinematical characteristics of $π^-$, $π^+$ mesons and protons in the interactions of protons with carbon nucleus at momentum 4.2 GeV/c in a dependence of collision centrality are analyzed. Parameter Q which is a difference between multiplicities of positive and negative charged particles without multiplicity of slow protons with momentum less than 0.3 GeV/c in an event, is taken as a criteria of collision centrality. The experimental data on events with different centrality are compared with predictions of the cascade-evaporation model and the modified FRITIOF model. For the first time, non-nucleonic degrees of freedom in nuclei ($Δ^+, Δ^0 $ isobars) are taken into account in the FRITIOF model, and a commonly good description of the secondary particles characteristics is reached.

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A. Galoyan, E. N. Kladnitskaya, O. V. Rogachevskii, R. Togoo, V. V. Uzhinskii. 2002-08-19. Analysis of pC-interactions at Momentum of 4.2 GeV/c Within Framework of FRITIOF and Cascade Models. https://arxiv.org/abs/hep-ex/0208032

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