Interaction of real and virtual NN- pairs in J/ψ decays

Alexander Milstein, Sergey Salnikov

Результат исследования: Научные публикации в периодических изданияхстатья по материалам конференции

Аннотация

The differential decay rates of the processes J/ψ→pp- π0, J/ψ→pp- η, J/ψ→pp- ω, J/ψ→pp- ρ, and J/ψ→pp- γ close to the pp- threshold are calculated with the help of the NN- optical potential. We use the potential which has been suggested to fit the cross sections of NN- scattering together with all other NN- experimental data available. The pp- nvariant mass spectra of J/ψ decays are in agreement with the available experimental data. The anisotropy of the angular distributions of the decays J/ψ→pp- π0(η), 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, 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. Using our potential and the Green's function approach we also describe the peak in the η π+ π- invariant mass spectrum in the decay J/ψ → γ η π+ π- in the energy region near the NN- threshold.

Язык оригиналаанглийский
Номер статьи01020
Число страниц7
ЖурналEPJ Web of Conferences
Том181
DOI
СостояниеОпубликовано - 25 июн 2018
Событие2017 International Conference on Exotic Atoms and Related Topics, EXA 2017 - Vienna, Австрия
Продолжительность: 11 сен 201715 сен 2017

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