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Moduli dependent mu-terms in a heterotic standard model

Braun, V., He, Y., Ovrut, B. A. & Pantev, T. (2006). Moduli dependent mu-terms in a heterotic standard model. Journal of High Energy Physics, 2006(03), 006 - 006. doi: 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 <phi> 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.

Publication Type: Article
Publisher Keywords: Superstrings and Heterotic Strings, Higgs Physics, Superstring Vacua, Supersymmetric Standard Model
Subjects: Q Science > QC Physics
Departments: School of Science & Technology > Mathematics
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