Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-03-05
Eur.Phys.J.C61:391-399,2009
Physics
High Energy Physics
High Energy Physics - Phenomenology
9 pages, 12 figures; in fig. 11 a) the vertical scale was corrected
Scientific paper
10.1140/epjc/s10052-009-1029-8
In nuclear collisions, a sizable fraction of the available energy is carried away by baryons. As the baryon number is conserved, the net-baryon $B-\bar{B}$ retains information on the energy-momentum carried by the incoming nuclei. A simple and consistent model for net-baryon production in high energy proton-proton and nucleus-nucleus collisions is presented. The basic ingredients of the model are valence string formation based on standard PDFs with QCD evolution and string fragmentation via the Schwinger mechanism. The results of the model are presented and compared with data at different centre-of-mass energies and centralities, as well as with existing models. These results show that a good description of the main features of net-baryon data is possible in the framework of a simplistic model, with the advantage of making the fundamental production mechanisms manifest.
Alvarez-Muñiz Jaime
Conceição Ricardo
de Deus Jorge Dias
Espirito Santo M. C.
Milhano Jose Guilherme
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