Towards Low Energy Physics from the Heterotic String

Details Towards Low Energy Physics from the Heterotic String Towards Low Energy Physics from the Heterotic String

2008-12-18

arxiv.org/abs/0812.3560v3

Fortsch.Phys.10:907-1036,2009

Physics

High Energy Physics

High Energy Physics - Theory

158 pages, Ph.D. thesis (advisor: H.P. Nilles); v3: references added, typos corrected

Scientific paper

10.1002/prop.200900073

We investigate orbifold compactifications of the heterotic string, addressing in detail their construction, classification and phenomenological potential. We present a strategy to search for models resembling the minimal supersymmetric extension of the standard model (MSSM) in Z_6-II orbifold compactifications. We find several MSSM candidates with the gauge group and the exact spectrum of the MSSM, and supersymmetric vacua below the compactification scale. They also exhibit the following realistic features: R-parity, seesaw suppressed neutrino masses, and intermediate scale of supersymmetry breakdown. In addition, we find that similar models also exist in other Z_N orbifolds and in the SO(32) heterotic theory.

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