Moduli Dependent mu-Terms in a Heterotic Standard Model

Details Moduli Dependent mu-Terms in a Heterotic Standard Model Moduli Dependent mu-Terms in a Heterotic Standard Model

2005-10-17

arxiv.org/abs/hep-th/0510142v1

JHEP 0603:006,2006

Physics

High Energy Physics

High Energy Physics - Theory

23 pages, LaTeX

Scientific paper

10.1088/1126-6708/2006/03/006

In this paper, we present a formalism for computing the non-vanishing Higgs mu-terms in a heterotic standard model. This is accomplished by calculating the cubic product of the cohomology groups associated with the vector bundle moduli (phi), Higgs (H) and Higgs conjugate (Hbar) superfields. This leads to terms proportional to phi H Hbar in the low energy superpotential which, for non-zero moduli expectation values, generate moduli dependent mu-terms of the form H Hbar. It is found that these interactions are subject to two very restrictive selection rules, each arising from a Leray spectral sequence, which greatly reduce the number of moduli that can couple to Higgs-Higgs conjugate fields. We apply our formalism to a specific heterotic standard model vacuum. The non-vanishing cubic interactions phi H Hbar are explicitly computed in this context and shown to contain only four of the nineteen vector bundle moduli.

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