Eikonal Amplitude in the Gravireggeon Model at Superplanckian Energies

Details Eikonal Amplitude in the Gravireggeon Model at Superplanckian Energies Eikonal Amplitude in the Gravireggeon Model at Superplanckian Energies

2004-05-18

arxiv.org/abs/hep-ph/0405166v1

Eur.Phys.J. C37 (2004) 241-249

Physics

High Energy Physics

High Energy Physics - Phenomenology

21 pages, LaTeX2e, no figures

Scientific paper

10.1140/epjc/s2004-01985-y

The gravity effects in high-energy scattering, described by a four-dimensional eikonal amplitude related to gravireggeons induced by compact extra dimensions are studied. It is demonstrated that the real part of the eikonal (with a massless mode subtracted) dominates its imaginary part at both small and large impact parameters, in contrast to the usual case of hadronic high-energy behavior. The real part of the scattering amplitude exhibits an exponential falloff at large momentum transfer, similar to that of the imaginary part of the amplitude.

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