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Phys. Rev. Lett. 100, 131301 (2008) [4 pages]

Signatures of Gravitational Fixed Points at the Large Hadron Collider

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Daniel F. Litim1,2 and Tilman Plehn3
1Department of Physics and Astronomy, University of Sussex, Brighton, BN1 9QH, United Kingdom
2Theory Group, Physics Division, CERN, CH-1211 Geneva 23, Switzerland
3SUPA, School of Physics, University of Edinburgh, United Kingdom

Received 31 July 2007; published 1 April 2008

We study quantum-gravitational signatures at the CERN Large Hadron Collider (LHC) in the context of theories with extra spatial dimensions and a low fundamental Planck scale in the TeV range. Implications of a gravitational fixed point at high energies are worked out using Wilson’s renormalization group. We find that relevant cross sections involving virtual gravitons become finite. Based on gravitational lepton pair production we conclude that the LHC is sensitive to a fundamental Planck scale of up to 6 TeV.

© 2008 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.100.131301
DOI:
10.1103/PhysRevLett.100.131301
PACS:
04.60.−m, 04.50.−h, 11.10.Hi, 11.15.Tk