Neutrinos in a warped extra dimension

Amongst the diverse propositions for extra dimensional scenarios, the modelof Randall and Sundrum (RS), which offers a solution for the long standingpuzzle of the gauge hierarchy problem, has attracted considerable attentionfrom both the theoretical and experimental points of view. In the context ofthe RS model with gauge bosons and fermions living in the bulk, a novel type ofmechanism has arisen for interpreting the strong mass hierarchy of the StandardModel fermions. This purely geometrical mechanism is based on a type and flavordependent localization of fermions along a warped extra dimension. Here, wefind concrete realizations of this mechanism, reproducing all the presentexperimental data on masses and mixings of the entire leptonic sector. Weconsider the case of Dirac neutrino masses (due to an additional right handedneutrino) where the various constraints on RS parameter space are taken intoaccount. The scenarios, elaborated in this paper, generate the entire leptonmass hierarchy and mixing, essentially, via the higher-dimensional mechanism,as the Yukawa coupling dependence is chosen to be minimal. In addition, fromthe above mechanism, we predict the typical lepton mixing angle 10^-5

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