Supersymmetric Hidden Sectors for Heterotic Standard Models

Understand

Within the context of the weakly coupled E8 x E8 heterotic string, we study the hidden sector of heterotic standard model compactifications to four-dimensions.

• Specifically, we present a class of hidden sector vector bundles - composed of the direct sum of line bundles only - that, together with an effective bulk five-brane, renders the heterotic standard model entirely N=1 supersymmetric.
• Two explicit hidden sectors are constructed and analyzed in this context; one with the gauge group E7 x U(1) arising from a single line bundle and a second with an SO(12) x U(1) x U(1) gauge group constructed from the direct sum of two line bundles.
• Each hidden sector bundle is shown to satisfy all requisite physical constraints within a finite region of the Kahler cone.