Phenomenology with supersymmetric flipped SU(6) Original Research Article

The supersymmetric flipped SU(6) × U(1) gauge symmetry can arise through compactification of the ten-dimensional E8 × E8 superstring theory. We show how realistic phenomenology can emerge from this theory by supplementing it with the symmetry R × U(1), where R denotes a discrete ‘R’-symmetry. The well-known doublet-triplet splitting problem is resolved to ‘all orders’ via the pseudo-Goldstone mechanism, and the GUT scale arises from an interplay of the Planck and supersymmetry breaking scales.