BibTeX
@MISC{Bell00bottom-upmodel,
author = {Nicole F. Bell and Raymond R. Volkas},
title = {Bottom-up model for maximal νµ − ντ mixing},
year = {2000}
}
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Abstract
We construct a model which provides maximal mixing between a pseudo-Dirac νµ/ντ pair, based on a local U(1)Lµ−Lτ symmetry. Its strengths, weaknesses and phenomenological consequences are examined. The mass gap necessitated by the pseudo-Dirac structure is most naturally associated with the LSND anomaly. The solar neutrino problem then requires a light mirror or sterile neutrino. By paying a fine-tuning price to nullify the mass gap, one can also invoke νe → νµ,τ for the solar problem. The model predicts a new intermediate range force mediated by the light gauge boson of U(1)Lµ−Lτ. Through the mixing of µ, τ and e, this force couples to electrons and thus may be searched for in precision “gravity ” experiments. I.
