%0 Journal Article
%T Constraints on vector meson photoproduction spin observables
%A W. M. Kloet
%A Frank Tabakin
%J Physics
%D 1999
%I arXiv
%R 10.1103/PhysRevC.61.015501
%X Extraction of spin observables from vector meson photoproduction on a nucleon target is described. Starting from density matrix elements in the vector meson's rest frame, we transform to spin observables in the photon-nucleon c.m. frame. Several constraints on the transformed density matrix and on the spin observables follow from requiring that the angular distribution and the density matrix be positive definite. A set of constraints that are required in order to extract meaningful spin observables from forthcoming data are enunciated.
%U http://arxiv.org/abs/nucl-th/9908068v1