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

A. A. Pankov·N. Paver
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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.

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A. A. Pankov, N. Paver. 2005-01-18. Identification of indirect new physics effects at e^+e^- colliders: the large extra dimensions case. https://doi.org/10.1103/physrevd.72.035012

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