Positivity Constraints on Spin Observables in Exclusive Pseudoscalar Meson Photoproduction

Abstract

Positivity constraints have proved to be important for spin observables of exclusive reactions involving polarized initial and final particles. Attention is focused in this note on the photoproduction of pseudoscalar mesons from spin 1/2 baryons, more specifically gamma+ N -> K+ Lambda, gamma+ N -> K Sigma, for which new experimental data are becoming available.

3 pages,RevTex, 1 figure, more details on the derivation, refs. added, to appear in Phys. Rev. C

References in corpus (1)

• Differential cross section and photon beam asymmetry for the gamma n -> K+ Sigma- reaction at Egamma=1.5-2.4 GeV

Cited by in corpus (3)

• Measurement of beam-recoil observables Ox, Oz and target asymmetry for the reaction gamma p -> K Lambda
• Polarization in Hyperon Photo- and Electro- Production
• Gerasimov-Drell-Hearn Sum Rule and the Discrepancy between the New CLAS and SAPHIR Data