THE ANALYSIS OF π − MESONS PRODUCED IN NUCLEUS-NUCLEUS COLLISIONS AT A MOMENTUM OF 4.5 GeV/c/NUCLEON IN LIGHT FRONT VARIABLES
M. AnikinaJoint Institute for Nuclear Research, 141980 Dubna, Russia, , RUL. ChkhaidzeHigh Energy Physics Institute, Tbilisi State University, University Str. 9, 380086 Tbilisi, Republic of Georgia, , GET. DjobavaHigh Energy Physics Institute, Tbilisi State University, University Str. 9, 380086 Tbilisi, Republic of Georgia, , GE
1999en
ABI
Аннотация
The light front analysis of π − 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
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