The analysis of 
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
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
