Signatures of TeV Scale Gravity in High Energy Collisions

Details Signatures of TeV Scale Gravity in High Energy Collisions Signatures of TeV Scale Gravity in High Energy Collisions

Publishing date

2003-07-25

URL

arxiv.org/abs/hep-ph/0307321v2

Journals

Mod.Phys.Lett. A20 (2005) 1203-1208

Science

Physics

Field

High Energy Physics

SubField

High Energy Physics - Phenomenology

Additional info

Expanded version, references added, 8 pages, no figures

Type

Scientific paper

Digital Object Identifier

10.1142/S0217732305017457

Abstract

In TeV scale unification models, gravity propagates in 4+d dimensions while gauge and matter fields are confined to a four dimensional brane, with gravity becoming strong at the TeV scale. For a such scenario, we study strong gravitational interactions in a effective Schwarzschild geometry. Two regimes appear. For large impact parameters, the ratio rho=(Rs/ro)1+d, (with Rs the Schwarzschild radius and ro the closest approach to the black hole), is small and the deflection angle is proportional to rho (like Rutherford-type scattering).For small impact parameters, the deflection angle develops a logarithmic singularity and becomes infinite for rho=rho crit= 2/(3+d). This singularity is reflected into a strong enhancement of the backward scattering (like a glory-type effect). We suggest a distinctive signature of black hole formation in particle collisions at TeV energies, the observation of the backward scattering events and its associated diffractive effects.

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