2011/07/02 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) #Nuclear physics research studies #Particle physics theoretical and experimental studies #hep-ex #hep-ph #nucl-ex #nucl-th
paper · pdf · doi:10.48550/arxiv.1107.0374
3 pages
arxiv created 2011/07/02 · openalex publication_date 2011/07/02 · arxiv updated 2011/07/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The NA61/SHINE collaboration measured inclusive cross sections of pi+ and pi- meson production in the interactions of 31 GeV/c proton with carbon nuclei at small emission angles (0 - 420 mrad). The collaboration presented also predictions of Monte Carlo models - FLUKA, VENUS and UrQMD, in a comparison with the data. The worst description of the data was observed for UrQMD model results. In the present paper it is shown that the drawback of the UrQMD model is connected with an inaccurate treatment of low mass string fragmentation. The strings appeared at a diffraction of target nucleons. A simple patch is proposed to overcome the problem.