Supersymmetric Standard Model from the Heterotic String
Supersymmetric Standard Model from the Heterotic String
We present a ${\mathbb{Z}}_{6}$ orbifold compactification of the ${\mathrm{E}}_{8}\ifmmode\times\else\texttimes\fi{}{\mathrm{E}}_{8}$ heterotic string which leads to the (supersymmetric) standard model gauge group and matter content. The quarks and leptons appear as three $\mathbf{16}$-plets of SO(10), whereas the Higgs fields do not form complete SO(10) multiplets. The model has large vacuum degeneracy. For …