“…In the majority of published analyses of experimental data the corresponding freedom has been, however, strongly limited by the choice of amplitude parameterization. The imaginary part has been usually assumed to be dominant in a great interval of t and vanishing in the region around diffractive minimum; with the real part determining the non-zero value of differential cross section in the diffractive minimum; see, e.g., the earlier papers [73,75,[84][85][86][87][88][89], [90][91][92] and also recent papers [5][6][7][8][9][10][12][13][14][15][16][17][18][19]22,93,94]. Description of elastic hadronic amplitude corresponding to these widely used assumptions has been fitted to experimental data at energy of 52.8 GeV and 8 TeV in Sects.…”