2001/05/25 by D. O. Caldwell, David O. Caldwell, Caldwell, David O.
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Scientific Research and Discoveries #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/0105275
14 pages, 2 figures, Invited paper for the 9th International Workshop on Neutrino Telescopes, Venice, Italy
arxiv created 2001/05/25 · openalex publication_date 2001/05/25 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
A neutrino mass-mixing scheme which explains qualitatively all present evidence for neutrino mass (the solar and atmospheric neutrino deficits, LSND, and hot dark matter), and also makes possible heavy-element nucleosynthesis by supernovae, requires at least one light sterile neutrino. String-inspired models with sub-millimeter extra dimensions provide naturally light sterile neutrinos, as is needed to explain the solar nue deficit. This bulk sterile neutrino provides a better fit to the solar data than conventional models by having vacuum oscillations of the nue to its zero mode and MSW oscillations to its first few Kaluza-Klein modes. While the prediction of the Super-Kamiokande energy spectrum gives a fit probability of 73%, the superior energy resolution of SNO's charged-current spectrum will determine whether this neutrino scheme is correct and can demonstrate that an extra dimension of ~60 mu m exists. Should this be the case, there are important implications for supernovae, ultra-high-energy cosmic rays, double beta decay, and dark matter.