Prospects for the detection of Kaluza-Klein excitations of gauge bosons in the ATLAS detector at the LHC

  • G. Azuelos
  • G. Polesello
Scientific Note


Kaluza-Klein excitations of the gauge bosons are a notable feature of theories with “small” (~ 1 TeV) extra dimensions. The leptonic decays of the excitations of γ and Z bosons provide a striking signature which can be detected at the LHC. We investigate the reach for these signatures through a parametrized simulation of the ATLAS detector. With an integrated luminosity of 100 fb–1 a peak in the lepton-lepton invariant mass will be detected if the compactification scale (M c ) is below 5.8 TeV. If no peak is observed, with an integrated luminosity of 300 fb–1 a limit of M c <12–13.5 TeV can be obtained from a detailed study of the shape of the lepton-lepton invariant mass distribution. If a peak is observed, the study of the angular distribution of the two leptons will allow to distinguish the KK excitations from alternative models yielding the same signature.

PACS: 11.10Kk – 11.25Mj – 13.85-t


Field Theory Elementary Particle Quantum Field Theory Alternative Model Angular Distribution 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© Springer-Verlag, Società Italiana di Fisica 2004

Authors and Affiliations

  • G. Azuelos
    • 1
  • G. Polesello
    • 2
  1. 1.Université de Montréal, and TRIUMF (Vancouver)Canada
  2. 2.INFN, Sezione di Pavia, Via Bassi 6, PaviaItaly

Personalised recommendations