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arXiv · hep-th/0512149

An SU(5) Heterotic Standard Model

Vincent Bouchard·Ron Donagi
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Abstract

We introduce a new heterotic Standard Model which has precisely the spectrum of the Minimal Supersymmetric Standard Model (MSSM), with no exotic matter. The observable sector has gauge group SU(3) x SU(2) x U(1). Our model is obtained from a compactification of heterotic strings on a Calabi-Yau threefold with Z_2 fundamental group, coupled with an invariant SU(5) bundle. Depending on the region of moduli space in which the model lies, we obtain a spectrum consisting of the three generations of the Standard Model, augmented by 0, 1 or 2 Higgs doublet conjugate pairs. In particular, we get the first compactification involving a heterotic string vacuum (i.e. a {\it stable} bundle) yielding precisely the MSSM with a single pair of Higgs.

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Vincent Bouchard, Ron Donagi. 2005-12-14. An SU(5) Heterotic Standard Model. https://doi.org/10.1016/j.physletb.2005.12.042

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