Three-Body Analysis of Incoherent Photoproduction of $\hat{I}\cdot$ Mesons on the Deuteron near Threshold

Abstract

The importance of three-body dynamics in the $\hat{I}\cdot np$ system in elastic and inelastic $\hat{I}\cdot$-deuteron scattering as well as coherent and incoherent $\hat{I}\cdot$ 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 $\hat{I}\cdot N$-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.

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