Beam asymmetry $Σ$ measurements on the $π^-$ photoproduction off neutrons

Abstract

The $Σ$ beam asymmetry in the photoproduction of negative pions from quasi-free neutrons in a deuterium target was measured at Graal in the energy interval 700 - 1500 MeV and a wide angular range, using polarized and tagged photons. The results are compared with recent partial wave analyses.

8 pages, 9 figures, 1 table, resubmitted to Phys. Rev. C