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

Abstract

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.

21 pages, 11 figures

References in corpus (3)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Center-Edge Asymmetry at Hadron Colliders
• Search For Extra Dimensions At LEP

Cited by in corpus (8)

• Localization of Gravitino Field on $f(R)$ Thick Branes
• Distinguishing New Physics Scenarios at a Linear Collider with Polarized Beams
• Localization of Gravitino Field on Thin Branes
• TeV-Scale Stringy Signatures at the Electron-positron Collider
• Radion stabilization from the vacuum on flat extra dimensions
• Positron Polarization at the International Linear Collider
• Distinguishing new physics scenarios with polarized electron and positron beams
• Revealing the large extra dimension effective interaction at an e^+e^- collider with polarized beams