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Abstract: A complete analysis of all heterotic Calabi-Yau compactifications based onpositive two-term monad bundles over favourable complete intersectionCalabi-Yau threefolds is performed. We show that the original data set of about7000 models contains 91 standard-like models which we describe in detail. Acloser analysis of Wilson-line breaking for these models reveals that none ofthem gives rise to precisely the matter field content of the standard model. Weconclude that the entire set of positive two-term monads on completeintersection Calabi-Yau manifolds is ruled out on phenomenological grounds. Wealso take a first step in analyzing the larger class of non-positive monads. Inparticular, we construct a supersymmetric heterotic standard model within thisclass. This model has the standard model gauge group and an additionalU1 {B-L} symmetry, precisely three families of quarks and leptons, one pairof Higgs doublets and no anti-families or exotics of any kind.



Autor: Lara B. Anderson, James Gray, Yang-Hui He, Andre Lukas

Fuente: https://arxiv.org/



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