2020 Impact factor 3.043
Hadrons and Nuclei
Eur. Phys. J. A 7, 139-145

The analysis of $\pi^-$ mesons produced in nucleus-nucleus collisions at a momentum of 4.5 GeV/c nucleon in light front variables

M. Anikina1 - L. Chkhaidze2 - T. Djobava2 - V. Garsevanishvili3 - L. Kharkhelauri2

1 Joint Institute for Nuclear Research, 141980 Dubna, Russia
2 High Energy Physics Institute, Tbilisi State University, University Str. 9, 380086 Tbilisi, Republic of Georgia
3 Mathematical Institute of the Georgian Academy of Sciences, M. Alexidze Str. 1, 380093 Tbilisi, Republic of Georgia

Received: 29 September 1999 Communicated by B. Povh

Abstract
The light front analysis of $\pi^-$ mesons in He(Li,C), C-Ne, C-Cu and O-Pb collisions is carried out. The phase space of secondary pions is divided into two parts in one of which the thermal equilibrium assumption seems to be in a good agreement with the data. Corresponding temperatures T are extracted and their dependence on (AP*AT)1/2 is studied. The results are compared with the predictions of the Quark-Gluon String Model (QGSM). The QGSM satisfactorily reproduces the experimental data for light and intermediate-mass nuclei.

PACS
25.70.-z Low and intermediate energy heavy-ion reactions


Copyright Società Italiana di Fisica, Springer-Verlag 2000