Zeros, Dips and Signs in pp and p$\rm\bf\bar p$ Elastic Amplitudes

Details Zeros, Dips and Signs in pp and p$\rm\bf\bar p$ Elastic Amplitudes Zeros, Dips and Signs in pp and p$\rm\bf\bar p$ Elastic Amplitudes

1999-07-19

arxiv.org/abs/hep-ph/9907415v1

Phys.Rev. D61 (2000) 077507

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTex, 9 pages, 5 figures. Submitted to Phys. Rev. D

Scientific paper

10.1103/PhysRevD.61.077507

The dips observed in the differential cross sections of elastic pp and p$\bar{\rm p}$ scattering are studied in terms of the locations of the zeros of the real and imaginary parts of the amplitude and of the sign of real part at large $|t|$. It is confirmed that the differences in shapes of the dips in the pp and p$\bar{\rm p}$ systems are determined by a change of sign of the real tail, which seems to be determined by perturbative QCD contributions.

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