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Two compact universal extra dimensional models are an interesting class ofmodels for different theoretical and phenomenological issues, such as thejustification of having three standard model fermion families, suppression ofproton decay rate, dark matter parity from relics of the 6-dimensional Lorentzsymmetry, origin of masses and mixings in the standard model. However, thesetheories are merely effective ones, with typically a reduced range of validityin their energy scale. We explore two limiting cases of the three standardmodel generations all propagating in the bulk or all localised to a brane, fromthe point of view of renormalisation group equation evolutions for the Higgssector and for the neutrino sector of these models. The recent experimentalresults of the Higgs boson from the LHC allow, in some scenarios, strongerconstraints on the cut-off scale to be placed, from the requirement of thestability of the Higgs potential.

Higgs quartic coupling and neutrino sector evolution in 2UED models