Abstract

The Poisson distribution for meson multiplicity is modified to take into account the geometric factor describing the overlapping volume of two particles in collision. Various models are tested with the following high-energy data: 16 and 25 GeV/c π-p experiments by the Aachen-Berlin-Bonn-CERN-Cracow-Hamburg-Warsaw collaboration and the Wisconsin group, respectively, and 28.5 GeV/c p-p experiment by Berkeley. The modified Poisson distribution gives a better fit than the currently used Poisson distribution. Consistent tests do not justify the validity of Wang’s conjecture that two mesons of opposite charge are emitted as a pair to conserve the electric charge. A discussion is presented on K-meson production by π-p collision of Wisconsin data and π production in\(\bar p - p\) annihilation of Bonn-Hamburg-Milan and Yale experiments.

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