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

2002/08/19 by A. Galoyan, Galoyan, A., E. N. Kladnitskaya +9
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex

paper · pdf · doi:10.48550/arxiv.hep-ex/0208032

15 pages, 10 Postscript figures

arxiv created 2002/08/19 · arxiv updated 2009/11/30

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⁺, Δ⁰ 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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