2014/04/08 by V. Uzhinsky, Uzhinsky, V.
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Nuclear Experiment (nucl-ex) #Nuclear Theory (nucl-th) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex #hep-ph #nucl-ex #nucl-th
paper · pdf · doi:10.48550/arxiv.1404.2026
13 pages, 15 figures
arxiv created 2014/04/08 · openalex publication_date 2014/04/08 · arxiv updated 2014/04/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
How do the models (Fritiof 1.6, Fritiof 7.0, UrQMD 3.3 and Hijing 1.383) describe experimental data of NA61/SHINE and NA49 Collaborations on pp and p\rm C interactions at high energies? An answer on this question is given in the paper. It is shown that the UrQMD model does not reproduce the energy dependence of π- meson production in pp-interactions; the Fritiof 1.6 and the Fritiof 7.0 models underestimate the meson production on ∼ 10 %; the Hijing model overestimates the data on ∼ 10 %. A change of a LUND fragmentation function parameter in the Fritiof models 1.6/7.0 allows to describe the data. A decreasing of probabilities of binary processes in the UrQMD model like p+p→ N+N' and so on, allows one to describe the data, thus a problem of a correct accounting of the processes arises. An increasing of a probability of the single diffraction dissociation in the Hijing model from 35 % to 50 % allows to describe the data, though a spectrum of masses produced in the diffraction is not satisfactory. A description of the diffraction is a problem in all the models.