Search for one large extra dimension with the DELPHI detector at LEP

Abstract

Single photons detected by the DELPHI experiment at LEP2 in the years 1997–2000 are reanalysed to investigate the existence of a single extra dimension in a modified ADD scenario with slightly warped large extra dimensions. The data collected at centre-of-mass energies between 180 and 209 GeV for an integrated luminosity of ∼650 pb−1 agree with the predictions of the Standard Model and allow a limit to be set on graviton emission in one large extra dimension. The limit obtained on the fundamental mass scale M D is 1.69 TeV/c 2 at 95% CL, with an expected limit of 1.71 TeV/c 2.

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Correspondence to J. Timmermans.

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Abdallah, J., Abreu, P., Adam, W. et al. Search for one large extra dimension with the DELPHI detector at LEP. Eur. Phys. J. C 60, 17–23 (2009). https://doi.org/10.1140/epjc/s10052-009-0874-9

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Keywords

  • Standard Model Background
  • Electromagnetic Calorimeter
  • Large Extra Dimension
  • DELPHI Collaboration
  • Standard Model Process