Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-12-28
Braz.J.Phys.37:785-787,2007
Physics
High Energy Physics
High Energy Physics - Phenomenology
4 pages, 4 figures, Proceedings of the ISMD06 conference, Paraty, Brazil, 2-9 Sep 2006, to appear in Brazilian Journal of Phys
Scientific paper
10.1590/S0103-97332007000500028
Gluon dominance model (GDM) studies multiparticle production in lepton and hadron processes. It is based on the QCD and phenomenological scheme of hadronization. The model describes well multiplicity distributions and their moments. It has revealed an active role of gluons in multiparticle production, it also has confirmed the fragmentation mechanism of hadronization in e+e- annihilation and its change to recombination mechanism in hadron and nucleus interactions. The GDM explains the shoulder structure of multiplicity distributions. The agreement with Au+Au peripheral collisions data for hadron-pion ratio has been also obtained with this model. Development of GDM allows one to research the multiplicity behavior of ppbar annihilation at tens of GeV. The mechanism of soft photons production and estimates of their emission region have been offered. The experimental data (project "Thermalization", U-70, IHEP) have confirmed a cluster nature of multiparticle production.
Kokoulina Elena
Kutov Andrey
Nikitin Vladimir
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