Abstract
M Theory compactified on G2 manifolds provides a rich framework for model building and phenomenology. In this communication we present the latest developments of M Theory on G2 manifolds with SO(10) as the Grand Unification Theory group, by making use of the discrete symmetries of the internal manifold. We show that we are generically led to a new solution to the doublet-triplet problem, which requires the presence of an extra 16X ,16X vector-like family at the TeV scale. Since the unification group is broken by discrete Wilson lines, the surviving gauge group has an extra U(1), that once broken can generate neutrino masses in a type-I seesaw mechanism. The main prediction of the framework is the existence of light states with the quantum numbers of a 16X ,16X vector-like family, which could show up in future LHC searches.
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