Constraints on large extra dimensions from neutrino oscillation experiments

H. Davoudiasl, Paul George Langacker, M. Perelstein

Research output: Contribution to journalArticlepeer-review

74 Scopus citations


The existence of bulk sterile neutrinos in theories with large extra dimensions can naturally explain small 4-dimensional Dirac masses for the active neutrinos. We study a model with 3 bulk neutrinos and derive various constraints on the size of the extra dimensions from neutrino oscillation experiments. Our analysis includes recent solar and atmospheric data from SNO and Super-Kamiokande, respectively, as well as various reactor and accelerator experiments. In addition, we comment on possible extensions of the model that could accommodate the LSND results, using natural parameters only. Our most conservative bound, obtained from the atmospheric data in the hierarchical mass scheme, constrains the largest extra dimension to have a radius R<0.82 μm. Thus, in the context of the model studied here, future gravitational experiments are unlikely to observe the effects of extra dimensions.

Original languageEnglish (US)
Article number105015
Pages (from-to)1050151-10501511
Number of pages9451361
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Issue number10
StatePublished - May 10 2002

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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