Seesaw mechanism in warped geometry

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Abstract

We show how the seesaw mechanism for neutrino masses can be realized within a five-dimensional (5D) warped geometry framework. Intermediate scale standard model (SM) singlet neutrino masses, needed to explain the atmospheric and solar neutrino oscillations, are shown to be proportional to MPl exp((2c-1)πkR), where c denotes the coefficient of the 5D Dirac mass term for the singlet neutrino which also has a Planck scale Majorana mass localized on the Planck-brane, and kR ≈ 11 in order to resolve the gauge hierarchy problem. The case with a bulk 5D Majorana mass term for the singlet neutrino is briefly discussed. © 2004 Published by Elsevier B.V.

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Huber, S. J., & Shafi, Q. (2004). Seesaw mechanism in warped geometry. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 583(3–4), 293–303. https://doi.org/10.1016/j.physletb.2003.12.012

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