Role of Coulomb distortion in form factor calculation for 12C with account for α-clusterization and nucleon-nucleon correlations

The 12C nucleus form factors are calculated in the plane-wave Born approximation (BA) in the nucleus Coulomb field both within the frames of the high energy approximation (HEA) and through the Dirac equation numerical solution (DES). The nuclear wave functions include the peculiarities, related to the α-clusterization and nucleons short-action correlations. It is shown, that the account for such correlations affects the form factors in the area of the comparatively high-transmitted pulses, wherein the significant differences take also place by applying various methods for calculating the BA, HEA and DES of the electron waves. The conclusion is made, that the DES method is more preferable by studying the effect of the nucleons correlations on the form factors at short and medium distances