Majorana Neutrino, the Size of Extra Dimensions, and Neutrinoless Double Beta Decay

Abstract

The problem of Majorana neutrino mass generated in Arkani-Hamed--Dimopoulos-Dvali model with n extra spatial dimensions is discussed. Taking into account constraints on neutrino masses coming from cosmological observations, it is possible to obtain lower limits on the size of extra dimensions as large as 10^{-6} mm. In the case of n=4 it is easy to lower the fundamental scale of gravity from the Planck energy to electroweak scale TeV without imposing any additional constraints. A link between the half-life of neutrinoless double beta decay and the size of extra dimensions is discussed.

arXiv comment5 pages, 1 figure, using RevTEX. Units conversion corrected

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• MSLED: A Minimal Supersymmetric Large Extra Dimensions Scenario
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• The effects of non-universal extra dimensions on the fermion electric dipole moments in the two Higgs doublet model
• The effects of non-universal extra dimensions on the radiative lepton flavor decays μ\to eγand τ\to μγin the two Higgs doublet model
• The possible effects of non-universal extra dimensions on t\to c l_i^- l_j^+ and H^0 \to h^0 (A^0) l_i^- l_j^+ decays in the general two Higgs Doublet model
• Extra Dimensions and Neutrinoless Double Beta Decay Experiments
• Neutrinoless double beta decay constrained by the existence of large extra dimensions
• The effect of the Gaussian profile of the new Higgs doublet on the radiative lepton flavor violating decay
• Charged Lepton Flavor Physics and Extra Dimensions