Skip to content

MSLED, Neutrino Oscillations and the Cosmological Constant

J. Matias, C. P. Burgess

hep-pharXiv:hep-ph/0508156

Abstract

We explore the implications for neutrino masses and mixings within the minimal version of the supersymmetric large-extra-dimensions scenario (MSLED). This model was proposed in hep-ph/0404135 to extract the phenomenological implications of the promising recent attempt (in hep-th/0304256) to address the cosmological constant problem. Remarkably, we find that the simplest couplings between brane and bulk fermions within this approach can lead to a phenomenologically-viable pattern of neutrino masses and mixings that is also consistent with the supernova bounds which are usually the bane of extra-dimensional neutrino models. Under certain circumstances the MSLED scenario can lead to a lepton mixing (PMNS) matrix close to the so-called bi-maximal or the tri-bimaximal forms (which are known to provide a good description of the neutrino oscillation data). We discuss the implications of MSLED models for neutrino phenomenology.

Create a lesson