Features of CC interactions at a momentum of 4.2 GeV/c per nucleon for various degrees of nuclear-collision centrality

Autor:	A. I. Bondarenko, V. V. Uzhinskii, E.N. Kladnitskaya, R. A. Bondarenko, O. V. Rogachevsky, A. S. Galoyan
Rok vydání:	2002
Předmět:	Physics Nuclear and High Energy Physics Particle physics Nuclear Theory Collision Atomic and Molecular Physics and Optics Spectral line Nuclear physics Transverse plane Pion Rapidity Multiplicity (chemistry) Impact parameter Nuclear Experiment Nucleon
Zdroj:	Physics of Atomic Nuclei. 65:90-101
ISSN:	1562-692X 1063-7788
Popis:	The multiplicity, rapidity, and transverse-momentum distributions of secondaries (negative pions and protons) from CC interactions characterized by various numbers of participant protons are presented. It is shown that, in contrast to the mean transverse momenta of protons, the mean transverse momenta of pions depend only slightly on the degree of collision centrality. The shape of the rapidity distributions of negative pions is also weakly dependent on the degree of collision centrality. With decreasing impact parameter, the product protons are found to concentrate in the central rapidity region. The data in question are analyzed within the modified version of the FRITIOF model. It is shown that, as soon as elastic nucleon rescatterings are taken into account, the model describes satisfactorily the experimental features of negative pions and fast protons. The spectra of slow protons are described only qualitatively because of limitations of the evaporation model used here to treat the deexcitation of residual nuclei.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c86eb425e8fd8336448abd99603f7ec5 https://doi.org/10.1134/1.1446560 Zobrazit plný text záznamu Plný text ve formátu PDF