Polarization observables in ${\pi }^0\eta$-photoproduction on the proton

Abstract

For ${\pi }^0\eta$-photoproduction on the nucleon formal expressions are developed for the five-fold differential cross section and the recoil polarization including beam and target polarizations. The polarization observables are described by various beam, target and beam-target asymmetries for polarized photons and/or polarized nucleons. They are given as bilinear hermitean forms in the reaction matrix elements divided by the unpolarized cross section. Numerical results for the linear and circular beam asymmetries for $\gamma p\to {\pi }^0\eta p$ are obtained within an isobar model and are compared with existing data. Predictions are also given for the target asymmetry $T_{11}$, and the beam-target asymmetries $T_{10}^c$ and $T_{11}^c$ for circularly polarized photons.

19 pages, 8 figures

References in corpus (4)

• Beam-Helicity Asymmetries in Double Pion Photoproduction off the Proton
• First measurement of the circular beam asymmetry in the gamma p --> pi0 eta p reaction
• Evaluation of the polarization observables I^S and I^C in the reaction gamma p --> pi^0 eta p
• Analysis of angular distributions in gamma N \to pi0 eta N