Three-body mechanism of $\eta$ production

Abstract

The usefulness of the three-body mechanism of $\eta$-meson production is tested by extending to high energies a recently developed two step model of the $pd{\to }^3$He $\eta$ reaction by us, which was successful in reproducing the energy dependence of the data near threshold. The $\eta$ production in this model, proceeds in two steps via the $pp\to \pi d$ and $\pi N\to \eta p$ reactions with the intermediate particles being off-shell. The final state interaction(FSI) is incorporated through a $T$-matrix for ${\eta }^3$He elastic scattering constructed using few body equations. In a comparison of the calculated angular distributions with some recently available data, we discover the limitations of the model at high energies.

References in corpus (7)

• Near-Threshold Production of $\eta$-Mesons
• pi N --> eta N and eta N --> eta N partial wave T-matrices in a coupled, three channel model
• Are there eta-Helium bound states?
• The $\eta NN$-system at low energy within a three-body approach
• Measurement of p + d -> 3He + eta in S(11) Resonance
• Study of the $\eta$-nucleus interaction in the $pd{\to }^{3}He\eta$ reaction near threshold
• The $pd{\to }^3{H}_{\Lambda }{K}^{+}$ reaction cross section

Cited by in corpus (9)

• η- and η'-mesic nuclei and U_A(1) anomaly at finite density
• Interaction of eta mesons with nuclei
• $\eta$-nucleus interaction from the $d+d$ reaction around the $\eta$ production threshold
• A study of the $pd\to pd\eta$ reaction
• Total and differential cross sections of $\eta$-production in proton-deuteron fusion for excess energies between $Q_{\eta }=13\text{MeV}$ and $Q_{\eta }=81\text{MeV}$
• Comment on "Hadronic ${}^3$He$\eta$ production near threshold"
• Eta meson rescattering effects in the p + 6Li --> eta + 7Be reaction near threshold
• Production of the omega meson in the pd --> 3He omega reaction at 1450 MeV and 1360 MeV
• Pairwise final state interactions in the p d --> p d eta reaction near threshold