Measurement of the polarization observables T, P, H in pseudoscalar meson photoproduction with the CBELSA/TAPS experiment

TL;DR

This paper reports on measurements of polarization observables T, P, and H in pseudoscalar meson photoproduction using the CBELSA/TAPS experiment, advancing understanding of meson production mechanisms.

Contribution

It presents new experimental data on polarization observables in meson photoproduction with high precision and coverage, utilizing polarized targets and photon beams.

Findings

Measured target asymmetry T for pi^0 and eta photoproduction.

Measured recoil polarization P for pi^0 and eta photoproduction.

Measured double polarization observable H for pi^0 and eta photoproduction.

Abstract

The CBELSA/TAPS experiment with a longitudinally or transversely polarized target and an energy tagged, linearly or circularly polarized photon beam allows the measurement of a large set of polarization observables. Due to its good energy resolution and high detection efficiency for photons, as well as the nearly complete solid angle coverage, it is ideally suited for the measurement of neutral mesons decaying into photons. Preliminary results for the target asymmetry T, the recoil polarization P, and the double polarization observable H are shown for \pi^0 and \eta photoproduction off the proton.