https://doi.org/10.1140/epja/i2008-10622-6
Regular Article — Theoretical Physics
η′ meson production in nucleon-nucleon collisions near the threshold
1
Forschungszentrum Dresden-Rossendorf, PF 510119, 01314, Dresden, Germany
2
Bogoliubov Laboratory of Theoretical Physics, JINR, 141980, Dubna, Russia
* e-mail: kaempfer@fzd.de
Received:
12
April
2008
Revised:
29
May
2008
Published online:
8
July
2008
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.
PACS: 13.75.-n Hadron-induced low-and intermediate-energy reactions and scattering (energy ≤ 10 GeV) – / 13.75.Cs Nucleon-nucleon interactions (including antinucleons, deuterons, etc.) – / 14.20.Gk Baryon resonances with S = 0 –
© SIF, Springer-Verlag Berlin Heidelberg, 2008
