Constraints on vector meson photoproduction spin observables

Abstract

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.

16 pages 6 figures

References in corpus (4)

• Completeness Rules for Spin Observables in Pseudoscalar Meson Photoproduction
• Vector Meson Photoproduction with an Effective Lagrangian in the Quark Model
• $\omega$ and $\rho$ Photoproduction with an Effective Quark Model Lagrangian
• Spin Information from Vector-Meson Decay in Photoproduction

Cited by in corpus (6)

• Study of Non-Strange Baryon Resonances with Meson Photoproduction
• Polarization Observables for Two-Pion Production off the Nucleon
• Light Baryon Spectroscopy
• Measurement of Spin-Density Matrix Elements in $\rho (770)$ Production with a Linearly Polarized Photon Beam at $E_{\gamma }=8.2-8.8\text{GeV}$
• Vector meson photoproduction studied in its radiative decay channel
• Photoproduction of electron-positron pairs on the proton in the resonance region