Measurement of the invariant mass distributions for the pp -> ppeta' reaction at excess energy of Q = 16.4 MeV

Abstract

The proton-proton and proton-eta' invariant mass distributions have been determined for the pp -> ppeta' reaction at an excess energy of Q = 16.4 MeV. The measurement was carried out using the COSY-11 detector setup and the proton beam of the cooler synchrotron COSY. The shapes of the determined invariant mass distributions are similar to those of the pp -> ppeta reaction and reveal an enhancement for large relative proton-proton momenta. This result, together with the fact that the proton-eta interaction is much stronger that the proton-eta' interaction, excludes the hypothesis that the observed enhancement is caused by the interaction between the proton and the meson.

Cited by in corpus (13)

• Etaprime and Eta Mesons with Connection to Anomalous Glue
• Determination of the eta'-proton scattering length in free space
• Combined analysis of eta' production reactions: gamma N -> eta' N, N N -> N N eta', and pi N -> eta' N
• Proton-${\eta }^{\prime }$ interactions at threshold
• Determination of the total width of the eta' meson
• Few-body aspects of the near threshold pseudoscalar meson production
• Study of the eta meson production with the polarised proton beam
• Study of the N N eta' production with COSY-11
• The nucleon resonances in the $J/\psi \to p\bar{p}{\eta }^{\prime }$ decay
• Upper limit of the total cross section for the pn --> pn eta' reaction
• Reaction pp -> pp πππas a background for hadronic decays of the eta-prime meson
• Close to threshold eta' meson production in proton-proton collisions at COSY-11
• Studies of properties of the eta' meson at the COSY-11 facility