Discriminating graviton exchange effects from other new physics scenarios in e^+e^- collisions

Abstract

We study the possibility of uniquely identifying the effects of graviton exchange from other new physics in high energy e^+e^- annihilation into fermion-pairs. For this purpose, we use as basic observable a specific asymmetry among integrated differential distributions, that seems particularly suitable to directly test for such gravitational effects in the data analysis.

Comments: 18 pages, including figures; v2: additional references and acknowledgements. To appear in PRD