1998/08/31 by P. Ramond
Physics and Astronomy · #hep-ph
published as Invited Talk at PASCOS98, May 1998, Boston, MA · 11 pages, uses sprocl.sty
arxiv created 1998/08/31 · arxiv updated 2009/11/30
We present a model which contains three Abelian symmetries beyond the standard model. One is anomalous \it \` a la Green-Schwarz, and family-independent; the other two are family symmetries. All are broken at a large scale by stringy effects. The model is predictive in the neutrino sector: large mixing between νμ-ντ, and \cal O(λ3) νe-νμ mixings. Its natural cut-off is the gauge unification scale, orders of magnitude below the perturbative string cut-off.