Final state interactions in the eta-d system

Abstract

The eta-deuteron scattering amplitude is calculated with a recent K-matrix model of eta-N interactions. The existence of a narrow virtual state in the eta-deuteron system is inferred. This state couples strongly to the eta-d channel but its effect on final state interactions in the pn --> eta-d reaction is shown to be rather weak. Fairly large eta-N scattering lengths are allowed by the experimental data.

34 pages, 4 figures

References in corpus (2)

• Nonexistence of a $\eta NN$ quasibound state
• Three-body analysis of incoherent $\eta$-photoproduction on the deuteron in the near threshold region

Cited by in corpus (14)

• eta-Nucleon Scattering Length and Effective Range uncertainties
• Interaction of eta mesons with nuclei
• The $\eta$-3N problem with separable interactions
• Few-body calculations of $\eta$-nuclear quasibound states
• Nuclear surface studies with antiprotonic atom X-rays
• Low-energy scattering and photoproduction of $\eta$-mesons on three-body nuclei
• Evidence for a backward peak in the gamma+d->pi^0+d cross section near the eta threshold
• Small eta-N scattering lengths favour eta-d and eta-alpha states
• Coherent π0η photoproduction on s-shell nuclei
• A study of the $pd\to pd\eta$ reaction
• Do we understand the $\eta N$ interaction from the near threshold $\eta$ photoproduction on the deuteron?
• Resonance-like structure near the $\eta d$ threshold in the $\gamma d${$\to$}${\pi }^0\eta d$ reaction
• Charge symmetry breaking as a probe for the real part of eta--nucleus scattering lengths
• Pairwise final state interactions in the p d --> p d eta reaction near threshold