Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2002-06-18
Nucl.Phys.Proc.Suppl. 122 (2003) 325-328
Physics
High Energy Physics
High Energy Physics - Phenomenology
4 pages, 4 figures, Presented at XII International Symposium on Very High Energy Cosmic Ray Interactions, CERN, Switzerland, 1
Scientific paper
10.1016/S0920-5632(03)80410-3
We provide description of rapidity spectra of particles produced in p-anti-p collisions using anomalous diffusion approach to account for their non-equilibrium character. In particular, we exhibit connection between multiproduction processes and anomalous diffusion described through the nonlinear Focker-Planck equation with nonlinearity given by the nonextensivity parameter q describing the underlying Tsallis q-statistics and demonstrate how it leads to the Feynman scaling violation in these collisions. The q parameter obtained this way turns out to be closely connected to parameter 1/k converting the original poissonian multiplicity distribution to its observed Negative Binomial form. The inelasticity of reaction has been also calculated and found to slightly decrease with the increasing energy of reaction. Keywords: inelasticity, rapidity spectra, nonextensivity
Rybczynski Maciej
Wilk Grzegorz
Wlodarczyk Zbigniew
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