Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5494075 | Nuclear Physics A | 2017 | 15 Pages |
Abstract
The pp¯ invariant mass spectra of the processes J/Ïâpp¯Ï, J/Ïâpp¯Ï, and J/Ïâpp¯γ close to the pp¯ threshold are calculated by means of the NN¯ optical potential. The potential model for NN¯ interaction in the S01 state is proposed. The parameters of the model are obtained by fitting the cross section of NN¯ scattering together with the pp¯ invariant mass spectra of the J/Ï decays. Good agreement with the available experimental data is achieved. Using our potential and the Green's function approach we also describe the peak in the ηâ²Ï+Ïâ invariant mass spectrum in the decay J/Ïâγηâ²Ï+Ïâ in the energy region near the NN¯ threshold.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
A.I. Milstein, S.G. Salnikov,