Angular distributions inJ/ψ→pp¯π0(

Abstract

The differential decay rates of the processes J/ψ → ppπ 0 and J/ψ → ppη close to the pp threshold are calculated with the help of the NN optical potential. The same calculations are made for the decays of ψ(2S). We use the potential which has been suggested to fit the cross sections of NN scattering together with NN and six pion production in e + e − annihilation close to the pp threshold. The pp invariant mass spectra is in agreement with the available experimental data. The anisotropy of the angular distributions, which appears due to the tensor forces in the NN interaction, is predicted close to the pp threshold. This anisotropy is large enough to be investigated experimentally. Such measurements would allow one to check the accuracy of the model of NN interaction.

Fine structure of the cross sections of e+e− annihilation near the thresholds of pp¯ and nnMilstein1, Salnikov2 2018Nuclear Physics ASelf Cite242321View full textAdd to dashboardCite

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