Methods of measurement of physical background noise and data processing in the γ+p → ν0+p reaction

The methods of measurement of physical beckgroung noise and data processing are given in the processes γ+N → X0+N (X0 → a1+a2) with detection of particles a1, a2 (measurement of their energies) and of the recoil nucleon. The above methods were used for measurement of the asymmetry of the cross section in the γ+p → ν0+p photoproduction reaction with polarized α quanta. It was shown that the data processing method on two-dimensional distributions of γ quanta from ν0 meson decay allowed to determine the cross section assymetry