The log-normal distribution for cascade multiplicities in hadron collisions

Source: Scopus
We introduce the log-normal distribution as a simple parametrization of multiplicities in hadron-hadron minimum-bias scattering and show that it fits data at all available energies, including the highest energy (pp̄ at √s=900 GeV) were the negative binomial distribution cannot describe the data well. The log-normal distribution is a two-parameter statistical probability function that has a simple and appealing physical interpretation. In statistics theory it arises in the case of multi-step cascade processes where each step multiplies the previous outcome. This gives a natural connection to state-of-the-art models for multiparticle production involving QCD parton cascades and hadronization.

Ingelman, G.Department of Radiation Sciences, Uppsala University (författare)
Department of Radiation Sciences, Uppsala UniversitDepartment of Radiation Sciences, Uppsala University (creator_code:org_t)

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