Van der Waals type model for pp elastic scattering at high energies

It is shown that Araki's Van der Waals (VDW) type model used for qualitative explanation of pp elastic scattering at high energies predicts a structure in angular distribution at √s >= 72 GeV which is quite different from the structure at presently available energies. It is further shown that the modified form of this model proposed by Shiohara and Yano to give a quantitative explanation of pp elastic scattering fails to explain the experimental data. Even at presently available energies, it predicts a new structure which is not consistent with experiment. Further modifications are suggested so that, at high energies, the new formula gives a very good agreement between theory and experiment in the range 0 <= -t < 12 (GeV/c)2. (author)