TY - JOUR

T1 - Interaction of real and virtual NN- pairs in J/ψ decays

AU - Milstein, Alexander

AU - Salnikov, Sergey

PY - 2018/6/25

Y1 - 2018/6/25

N2 - 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.

AB - 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.

KW - ANNIHILATION

KW - STATE

UR - http://www.scopus.com/inward/record.url?scp=85051040065&partnerID=8YFLogxK

U2 - 10.1051/epjconf/201818101020

DO - 10.1051/epjconf/201818101020

M3 - Conference article

AN - SCOPUS:85051040065

VL - 181

JO - EPJ Web of Conferences

JF - EPJ Web of Conferences

SN - 2101-6275

M1 - 01020

T2 - 2017 International Conference on Exotic Atoms and Related Topics, EXA 2017

Y2 - 11 September 2017 through 15 September 2017

ER -