Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2001-12-11
Nucl.Phys.B630:293-325,2002
Physics
High Energy Physics
High Energy Physics - Phenomenology
45 pages, 9 figures. v2: added refs and expanded discussion of fixed-angle string scattering
Scientific paper
10.1016/S0550-3213(02)00142-6
Elastic collisions in the transplanckian region, where the center-of-mass energy is much larger than the fundamental gravity mass scale, can be described by linearized general relativity and known quantum-mechanical effects as long as the momentum transfer of the process is sufficiently small. For larger momentum transfer, non-linear gravitational effects become important and, although a computation is lacking, black-hole formation is expected to dominate the dynamics. We discuss how elastic transplanckian collisions can be used at high-energy colliders to study, in a quantitative and model-independent way, theories in which gravity propagates in flat extra dimensions. At LHC energies, however, incalculable quantum-gravity contributions may significantly affect the experimental signal.
Giudice Gian F.
Rattazzi Riccardo
Wells James Daniel
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