Supersymmetric Standard Model from the Heterotic String

Wilfried Buchmüller; Koichi Hamaguchi; Oleg Lebedev; Michael Ratz

doi:10.1103/PhysRevLett.96.121602

Supersymmetric Standard Model from the Heterotic String

Wilfried Buchmüller¹, Koichi Hamaguchi¹, Oleg Lebedev², and Michael Ratz²

¹Deutsches Elektronen-Synchrotron DESY, 22603 Hamburg, Germany
²Physikalisches Institut der Universität Bonn, Nussallee 12, 53115 Bonn, Germany

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Phys. Rev. Lett. 96, 121602 – Published 30 March, 2006

DOI: https://doi.org/10.1103/PhysRevLett.96.121602

Abstract

We present a $Z_{6}$ orbifold compactification of the $E_{8} \times E_{8}$ heterotic string which leads to the (supersymmetric) standard model gauge group and matter content. The quarks and leptons appear as three $16$ -plets of SO(10), whereas the Higgs fields do not form complete SO(10) multiplets. The model has large vacuum degeneracy. For generic vacua, no exotic states appear at low energies and the model is consistent with gauge coupling unification. The top quark Yukawa coupling arises from gauge interactions and is of the order of the gauge couplings, whereas the other Yukawa couplings are suppressed.

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Supersymmetric Standard Model from the Heterotic String

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Supersymmetric Standard Model from the Heterotic String

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