CERN Accelerating science

Preprint
Report number	E1-2003-67 ; JINR-E1-2003-67
Title	The Analysis of \pi^{-}-Meson Spectra in Semicentral CC and CTa Collisions at a Momentum of 4.2 GeV/c per Nucleon in Terms of Light Front Variables
Author(s)	Chkhaidze, L V ; Djobava, T D ; Garsevanishvili, V R ; Kharkhelauri, L L ; Kladnitskaya, E N ; Kuznetsov, A A ; Kuratashvili, G O
Affiliation	(Veksler-Baldin Laboratory of High Energies, Dubna ; High Energy Physics Institute, Tbilisi State University, Georgia) ; (Mathematical Institute of the Georgian Academy of Sciences, Georgia)
Publication	2003
Imprint	10 Apr 2003
Number of pages	20
Published in:	Yad. Fiz.
Subject category	Particle Physics - Experiment
Abstract	The inclusive spectra of pions produced in CC and CTa collisions at a momentum of 4.2 GeV/c per nucleon are analyzed in terms of light front variables \xi and \zeta. The phase space of the secondary pions is divided into two parts with very different angular and momentum distributions. In one of this part the thermal equilibrium assumption seems to be in good agreement with the data. Corresponding temperatures T are extracted, and their dependence on (A_{P}*A_{T})^{1/2} is studied. T decreases linearly with increasing (A_{P}*A_{T})^{1/2}. The results are compared with the predictions of the Quark-Gluon String Model (QGSM). The QGSM satisfactorily reproduces the experimental data.
Submitted by	[email protected]