TY - JOUR

T1 - Interaction of real and virtual pp¯ pairs in J/ψ→pp¯γ(ρ,ω) decays

AU - Milstein, A. I.

AU - Salnikov, S. G.

PY - 2017/10/1

Y1 - 2017/10/1

N2 - The pp¯ invariant mass spectra of the processes J/ψ→pp¯ω, J/ψ→pp¯ρ, and J/ψ→pp¯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/ψ 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 η′π+π− invariant mass spectrum in the decay J/ψ→γη′π+π− in the energy region near the NN¯ threshold.

AB - The pp¯ invariant mass spectra of the processes J/ψ→pp¯ω, J/ψ→pp¯ρ, and J/ψ→pp¯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/ψ 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 η′π+π− invariant mass spectrum in the decay J/ψ→γη′π+π− in the energy region near the NN¯ threshold.

KW - Final-state interaction

KW - Hadronic form factors

KW - Optical potentials

KW - THRESHOLD

KW - ETA

KW - J/PSI

KW - STATE

KW - PROTON

KW - CMD-3 DETECTOR

UR - http://www.scopus.com/inward/record.url?scp=85020483237&partnerID=8YFLogxK

U2 - 10.1016/j.nuclphysa.2017.06.002

DO - 10.1016/j.nuclphysa.2017.06.002

M3 - Article

AN - SCOPUS:85020483237

VL - 966

SP - 54

EP - 63

JO - Nuclear Physics A

JF - Nuclear Physics A

SN - 0375-9474

ER -