On compton forward scattering on 12D and 24He nuclei

The experimental values of the differential cross sections of the Compton forward scattering on the 12D and 24He nuclei obtained analyzing the data on the Compton scattering on nucleons and nuclei are presented. Taking into account Glauber corrections, the quantities Re f10 and the ratio of absolute value square |f20|2/|f10|2 (where f1 and f2 is the spin-non-flip and spin-flip amplitudes respectively) are estimated from the data in the energy range of photons 2-6 GeV. Within the experimental errors, the values of Re f10 coincide with the theoretical values calculated using dispersion relations. The spin-flip contribution in this energy range is less than or equal to 5%