2002/09/26 by A. Fix, H. Arenhoevel
Physics and Astronomy · #nucl-th
published as Few Body Syst.Suppl. 14 (2003) 281-286 · 6 pages latex including style files. Invited talk at XVIII European Conference on Few-Body Problems in Physics, September 2002, Bled, Slovenija. Proceedings to be published in Few-Body Systems, Supplement
arxiv created 2002/09/26 · arxiv updated 2009/12/01
The importance of three-body dynamics in the ηnp system in elastic and inelastic η-deuteron scattering as well as coherent and incoherent η photoproduction on the deuteron in the energy region from threshold up to 30 MeV above has been investigated. It is shown that a restriction to first order rescattering with respect to the NN- and ηN-final state interactions, i.e., restriction to rescattering in the two-body subsystems, does not give a sufficiently accurate approximation to the s-wave reaction amplitude and that higher order terms, as described by the three-body dynamics give very substantial contributions.