Center-Edge Asymmetry at Hadron Colliders

Details Center-Edge Asymmetry at Hadron Colliders Center-Edge Asymmetry at Hadron Colliders

2004-01-26

arxiv.org/abs/hep-ph/0401199v1

Phys.Rev. D69 (2004) 115001

Physics

High Energy Physics

High Energy Physics - Phenomenology

23 pages, including figures

Scientific paper

10.1103/PhysRevD.69.115001

We investigate the possibility of using the center-edge asymmetry to distinguish graviton exchange from other new physics effects at hadron colliders. Specifically, we study lepton-pair production within the ADD and RS scenarios. At the Tevatron, the graviton-Z interference is the most important contribution to the center-edge asymmetry, whereas at the LHC, the dominant contribution comes from gluon fusion via graviton exchange, which has no analogue at e^+ e^- colliders. We find that spin-2 and spin-1 exchange can be distinguished up to an ADD cut-off scale, M_H, of about 5 TeV, at the 95% CL. In the RS scenario, spin-2 resonances can be identified in most of the favored parameter space.

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