Abstract
The shrinkage of the diffraction peaks is reproduced by the interference of a geometric pomeron and of complex poles representing S-channel threshold effects (like heavy pair production). Asymptotically, one recovers the Chou and Yang model. The shrinkage is expected to stop at P lab ⋍ 10 5 GeV/c . The total cross section σ T is conjectured to have a maximum of 45–48 mb (for pp) at about the same energy where the shrinkage stops. The asymptotic value of σ T would only differ from the maximum value by about 1 mb. The break structure at |t| ⋍ 1.2 GeV 2/c 2 seen at low energies for pp elastic scattering is explained in term of secondary Regge exchanges only. At high energies, the dip at | t| ∼ 1.3–1.4 GeV 2/ c 2 is given by the geometric pomeron. Because of the eikonalization procedure one obtains an intermediate | t| shrinkage and a dip displacement in good agreement with experiment.
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