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Survey of Analyses of ADD Observables at LHC

This survey paper discusses various analyses of observables related to the Large Hadron Collider (LHC) and the models with large extra dimensions. It includes discussions on virtual graviton exchange, gg → γγ, q-qbar → γγ processes, as well as Feynman diagrams. The paper also presents 2σ and 3σ limits and the discovery reach of different experiments.

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Survey of Analyses of ADD Observables at LHC

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  1. Survey of Analysesof ADD Observables at LHC

  2. Eboli, Han, Magro and Mercadente • hep-ph/9908358 • virtual graviton exchange • gg → γγ • q-qbar → γγ • 2σ limits

  3. Feynman Diagrams

  4. 95% CL Limits

  5. Atwood, Bar-Shalom, Soni • hep-ph/9906400 • Assumed n = 4 • ∫Ldt = 30 fb-1 • pp → VV, jj • Results compatible with hep-ph/9908358 • 3σ resolution if MD < 6 TeV

  6. Hinchliffe, Vacavant • J. Phys G 2001 Vol. 27 p. 1839 • gg → gG→ j + missing ET • gq→ qG→ j + missing ET • q-qbar→ gG→ j + missing ET

  7. Other Important Points • n = 6 cannot be probed at LHC, as the cross section for graviton emission is too small • The authors point out cosmological observations of SN 1987a imply MD > 50 TeV for n = 2, in apparent contradiction to their own analysis.

  8. Discovery Reach

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