Constraints on vector meson photoproduction spin observables

Details Constraints on vector meson photoproduction spin observables Constraints on vector meson photoproduction spin observables

1999-08-20

arxiv.org/abs/nucl-th/9908068v1

Phys.Rev. C61 (2000) 015501

Physics

Nuclear Physics

Nuclear Theory

16 pages 6 figures

Scientific paper

10.1103/PhysRevC.61.015501

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.

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