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C.S. Lam McGill If a single large fifth dimension is present, neutrino oscillation is possibly the only way to detect it via high energy physics. Neutrino oscillation data indicate superficially that such a fifth dimension does not exist, but there are ways to go around this conclusion. I will discuss a simple model which allows the fifth dimension to exist. In fact, according to this model, the observed large neutrino mixing is a consequence of the strong coupling between the brane and bulk neutrinos. This model also explains the smallness of the reactor mixing angle $\theta_{13}$ to be due to the small ratio of the solar to atmospheric mass gaps.
Tuesday, January 15th 2002, 13:10 |