Multiplicities in ultrarelativistic proton-(anti)proton collisions and negative binomial distribution fits

Details Multiplicities in ultrarelativistic proton-(anti)proton collisions and negative binomial distribution fits Multiplicities in ultrarelativistic proton-(anti)proton collisions and negative binomial distribution fits

2011-01-04

arxiv.org/abs/1101.0787v3

Int.J.Mod.Phys. A26 (2011) 3171-3184

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, clarified version, reference added. To appear in International Journal of Modern Physics A

Scientific paper

10.1142/S0217751X11053894

Likelihood ratio tests are performed for the hypothesis that charged-particle multiplicities measured in proton-(anti)proton collisions at $\sqrt{s}$ = 0.9 and 2.36 TeV are distributed according to the negative binomial form. Results indicate that the hypothesis should be rejected in the all cases of ALICE-LHC measurements in the limited pseudo-rapidity windows, whereas should be accepted in the corresponding cases of UA5 data. Possible explanations of that and of the disagreement with the least-squares fitting method are given.

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