Upper limit of the total cross section for the pn --> pn eta' reaction

Abstract

The upper limit of the total cross section for the pn --> pn eta' reaction has been determined near the kinematical threshold in the excess energy range from 0 to 24 MeV. The measurement was performed using the COSY-11 detector setup, a deuteron cluster target, and the proton beam of COSY with a momentum of 3.35 GeV/c. The energy dependence of the upper limit of the cross section was extracted exploiting the Fermi momenta of nucleons inside the deuteron. Comparison of the determined upper limit of the ratio R_eta' = sigma(pn --> pn eta') / sigma(pp --> pp eta') with the corresponding ratio for eta-meson production does not favor the dominance of the N*(1535) resonance in the production process of the eta' meson and suggests nonidentical production mechanisms for eta and eta' mesons.

References in corpus (5)

• The role of $N^{\ast }(1535)$ in ${\eta }^{\prime }$ production
• Mechanism of the close-to-threshold production of the eta meson
• Near threshold production of the eta meson via the quasi-free pn --> pn eta reaction
• Measurement of the invariant mass distributions for the pp -> ppeta' reaction at excess energy of Q = 16.4 MeV
• eta-prime Meson Production in Nucleon-Nucleon Collisions Near The Threshold

Cited by in corpus (4)

• Etaprime and Eta Mesons with Connection to Anomalous Glue
• Combined analysis of eta' production reactions: gamma N -> eta' N, N N -> N N eta', and pi N -> eta' N
• Few-body aspects of the near threshold pseudoscalar meson production
• Studies of properties of the eta' meson at the COSY-11 facility