Abstract
The production of η′ mesons in the reactions pp → ppη′ and pn → pnη′ at threshold-near energies is analyzed within a covariant effective meson-nucleon theory. The description of cross-section and angular distributions of the available data in this kinematical region in the pp channel is accomplished by including meson currents and nucleon currents with the resonances S 11(1650), P 11(1710) and P 13(1720). Predictions for the pn channel are given. The di-electron production from subsequent η′ Dalitz decay η′ → γγ * → γe + e − is also calculated and numerical results are presented for intermediate energy and kinematics of possible experiments with HADES, CLAS and KEK-PS.
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