Charged Particle Multiplicities in 100 GeV/c P Interactions
Charged Particle Multiplicities in 100 GeV/c P Interactions

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Published: 1975

Total Pages: 4

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Results are presented on the topological cross sections obtained for antiproton-proton interactions from an exposure of the Fermilab 30-inch bubble chamber to a 100 GeV/ c negative beam enriched in p 's. The p p inelastic cross section is found to be [sigma] inel = 34.6 ± 0.4 mb, and the average inelastic charged particle multiplicity to be $\langle$n$\rangle$ = 6.74 ± 0.05.

Multiplicities in High Energy Interactions
Multiplicities in High Energy Interactions

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Published: 1984

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Charged particle multiplicities in hadronic collision have been measured for all energies up to .sqrt.s = 540 GeV in the center of mass. Similar measurements in ee− annihilation cover the much smaller range - up to .sqrt.s = 40 GeV. Data are also available from deep inelastic neutrino scattering up to .sqrt.s approx. 10 GeV. The experiments measure the mean charged multiplicity , the rapidity density at y = O, and the distributions in prong number. The mean number of photons associated with the events can be used to measure the .pi.° and eta° multiplicities. Some information is also available on the charged pion, kaon, and nucleon fractions as well as the K° and .lambda.° rates and for the higher energy data, the identically equal fraction. We review this data and consider the implications of extrapolations to SSC energies. 13 references.