Pion production in inelastic and central nuclear collisions at high energy

  • A detailed study of pion production in inelastic and central nucleus-nucleus collisions was carried out using a 2 m streamer spectrometer. Nuclear targets mounted inside the streamer chamber were exposed to nuclear beams of 4.5 GeV/c/nucleon momentum. A systematic study of the influence of the central trigger on observed data is performed. The data on multiplicities, rapidities, transverse momenta, and emission angles of negative pions are presented for various pairs of colliding nuclei. Intercorrelations between various characteristics are studied and discussed. The results are compared with predictions of some theoretical models. It is shown that the main features of the pion production in nuclear collisions can be satisfactorily described by a model assuming independent nucleon-nucleon collisions with subsequent cascading process. However, the observed correlation between Lambda and pion characteristics seems to be unexplained by this picture.

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Author:M. Kh. AnikinaGND, A. I. GolochvastovGND, K. Iovchev, Sergey Aleksandrovich Khorozov, E. Kuznetzova, Juris Lukstins, Edgar Okonov, T. Ostanievich, Viacheslav D. Toneev, G. Vardenga, L. Chkhaidze, Tamar DjobavaORCiD, Marek GaździckiORCiD, Ewa Skrzypczak, R. Szweed, K. Gudima
Parent Title (German):Physical review. C, Nuclear physics
Publisher:The American Physical Society
Place of publication:Woodbury, NY
Document Type:Article
Date of Publication (online):2005/10/04
Year of first Publication:1986
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2005/10/04
Page Number:15
First Page:895
Last Page:909
Source:Phys.Rev.C33:895-909,1986, ©1986 The American Physical Society
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
PACS-Classification:20.00.00 NUCLEAR PHYSICS / 25.00.00 Nuclear reactions: specific reactions / 25.70.-z Low and intermediate energy heavy-ion reactions
Licence (German):License LogoDeutsches Urheberrecht