Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-06-30
Eur. Phys. J. C (2010) 70: 1-4
Physics
High Energy Physics
High Energy Physics - Phenomenology
6 pages, 1 figure
Scientific paper
10.1140/epjc/s10052-010-1444-x
Recent ALICE data for the multiplicity distributions in the central rapidity bins at LHC energies are compared with the results from two default versions of the PYTHIA 8 generator. We find that, contrary to the earlier versions of PYTHIA, the model overestimates the increase of average multiplicity with energy. Tuning two of the model parameters one obtains reasonable agreement with data. The dependence of the normalized moments of the distribution on the rapidity bin width and on energy is also qualitatively correct.
Fialkowski K.
Wit R.
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