eta d scattering in the region of the S11 resonance

Abstract

We have studied the reaction eta d -> eta d close to threshold within a nonrelativistic three-body formalism. We considered several eta N and NN models, in particular potentials with separable form, fitted to the low-energy eta N and NN data to represent the two-body interactions. We found that with realistic two-body interactions a quasibound state does not exist in this system, although there is an enhancement of the cross section by one order of magnitude, in the region near threshold, which is a genuine three-body effect not predicted within the impulse approximation.

18 pages Revtex, 2 figures

References in corpus (6)

• pi N --> eta N and eta N --> eta N partial wave T-matrices in a coupled, three channel model
• The Eta-Nucleon Scattering Length and Effective Range
• A coupled K-matrix description of the reactions pi+N -> pi+N, pi+N -> eta+N, gamma+N -> pi+N and gamma+N -> eta+N
• $\eta$-Deuteron Scattering
• Faddeev-type calculation of eta-d threshold scattering
• Influence of final state interaction on incoherent η-photoproduction on the deuteron near threshold

Cited by in corpus (14)

• The production of eta-mesons in nucleon-nucleon collisions near threshold
• Interaction of eta mesons with nuclei
• The $\eta NN$-system at low energy within a three-body approach
• Few-body calculations of $\eta$-nuclear quasibound states
• The Reaction $pp\to pp\eta$ and the eta-Nucleon and Nucleon-Nucleon Interactions
• Binding of charmonium with two- and three-body nuclei
• Final state interactions in the eta-d system
• Nonexistence of a $\eta NN$ quasibound state
• Coherent π0η photoproduction on s-shell nuclei
• Resonance-like structure near the $\eta d$ threshold in the $\gamma d${$\to$}${\pi }^0\eta d$ reaction
• Incoherent Photoproduction of $\eta$-mesons from the Deuteron near Threshold
• Relativistic description of the np to eta d reaction near threshold
• Coherent Photoproduction of eta-mesons on Three-Nucleon Systems
• Probing the existence of η^3He mesic nucleus with a few-body approach