Energy dependence of nucleon-nucleon inelastic total cross-sections

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Abstract
Total inelastic pp cross-sections are reconstructed for laboratory kinetic energies ranging from 0.3 to 400 GeV. They are obtained by fitting together the sum of total cross-sections for exclusive inelastic channels, the sum of topological cross-sections and the results for independent « direct » measurements. The inelastic np cross-sections are reconstructed in the energy range below 4.2 GeV using the sum of individual exclusive channels and the direct measurements. The cross-sections are fitted by series of generalized Laguerre polynomials insuring a correct threshold behaviour. The results of the fits are presented in tables and in figures, where they are compared with existing data. The obtained total cross-section energy dependences made it possible to determine the total cross-section for the isospin I = 0 state and to test isospin invariance predictions for individual types of reaction. The agreement of the data with the predictions is surprisingly poor in the case of NN => NNπ reactions