Измерение асимметрии фоторождения отрицательно-заряженных пионов линейно-поляризованными фотонами на тензорно-поляризованных дейтронах

Abstract

The first results of a double polarization experiment on the determination of the asymmetry of the [pi]meson photoproduction reaction by a linearly polarized photon on a tensor-polarized deuteron in the virtual photon energy range (300-700 MeV) are presented in the paper. The measurements were performed on the internal tensor-polarized deuterium target of the VEPP-3 electron-positron storage ring at an electron beam energy of 2 GeV. In the experiment, the method of recording two protons and a scattered electron for coincidence was used. The obtained measurement results are compared with the theoretical predictions made in the impulse approximation taking into account the [pi]N and NN rescattering in the final state.