Identification of indirect new physics effects at e^+e^- colliders: the large extra dimensions case

Details Identification of indirect new physics effects at e^+e^- colliders: the large extra dimensions case Identification of indirect new physics effects at e^+e^- colliders: the large extra dimensions case

2005-01-18

arxiv.org/abs/hep-ph/0501170v1

Phys.Rev. D72 (2005) 035012

Physics

High Energy Physics

High Energy Physics - Phenomenology

21 pages, 11 figures

Scientific paper

10.1103/PhysRevD.72.035012

We discuss indirect manifestations of graviton exchange, predicted by large extra dimensions, in fermion-pair production at a high-energy e^+e^- collider. By means of specifically defined asymmetries among integrated angular distributions, the graviton exchange signal can be cleanly distinguished from the effects of either vector-vector contact interactions or heavy scalar exchanges. The role of initial electron and positron beams polarization is also discussed. The method is applied to a quantitative assessment of the sensitivity to the mass cut-off parameter M_H of the KK graviton tower in the ADD scenario, and of the potential identification reach of this mechanism obtainable at the currently planned Linear Collider.

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