An SU(5) heterotic standard model

By V. Bouchard, R. Donagi. 2005

285 citations recorded by the source corpus.

Abstract We introduce a new heterotic Standard Model which has precisely the spectrum of the Minimal Supersymmetric Standard Model (MSSM), with no exotic matter. The observable sector has gauge group SU ( 3 ) C × SU ( 2 ) L × U ( 1 ) Y . Our model is obtained from a compactification of heterotic strings on a Calabi–Yau threefold with Z 2 fundamental group, coupled with an invariant SU ( 5 ) bundle. Depending on the region of moduli space in which the model lies, we obtain a spectrum consisting of the three generations of the Standard Model, augmented by 0, 1 or 2 Higgs doublet conjugate pairs. In particular, we get the first compactification involving a heterotic string vacuum (i.e., a stable bundle) yielding precisely the MSSM with a single pair of Higgs.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/ca0e38b87ecd8113ab2ef3d8495bf488eb707449

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Nuclear and High Energy Physics

1. T. Weigand
2. Eran Palti
3. Ralph Blumenhagen
4. Thomas W. Grimm
5. D. Lust
6. C. Vafa
7. B. Kors
8. M. Wijnholt

Citations in the corpus

• Two Hundred Heterotic Standard Models on Smooth Calabi-Yau Threefolds (2011, background): “The number of models constructed should be considered with the knowledge that to date, only 3 other smooth heterotic standard models have been produced in the literature [2, 5, 12].”
• Proton stability in grand unified theories, in strings and in branes (2006, background): “[332] a compactification of the heterotic string on a CalabiYau threefold with Z2 fundamental group coupled with an invariant SU(5) bundle is achieved.”
• Four-dimensional string compactifications with D-branes, orientifolds and fluxes (2006, methodology): “Using sophisticated mathematical tools for constructing both SU(5) [321, 325] and SO(10) [322, 323, 324] bundles, string models can be defined whose particle content comes remarkably close to the MSSM.”
• Heterotic line bundle standard models (2012, background): “Only a relatively small number of models exhibiting a realistic massless spectrum have been constructed in this way [5, 6, 11, 18], reflecting the considerable technical problems associated with vector bundles on smooth Calabi-Yau manifolds.”
• Heterotic GUT and Standard Model vacua from simply connected Calabi–Yau manifolds (2006, background): “Corresponding realistic models from SU(5) and SO(10) GUTs in this context have been provided in [8] and [9,10], respectively.”
• Exploring positive monad bundles and a new heterotic standard model (2009, background): “In recent years, the focus has moved to a wider class of models based on general holomorphic vector bundles on the internal space which can lead to any of the three GUT groups mentioned above [5–16].”
• GUTs and exceptional branes in F-theory — II. Experimental predictions (2008, background): “Given the prominent role that the del Pezzo 9 surface has played in recent heterotic models such as [8,9], it would be interesting to study models based on such Dolgachev surfaces.”
• Model building with $F$-theory (2008, background): “Recently, ten-dimensional string backgrounds were found that reproduce the MSSM at low energies [1, 2].”
• Ekpyrotic and cyclic cosmology (2008, background): “lds that can play a role, and there can be additional branes in the bulk. Such extra ingredients are usually necessary in order to obtain a realistic model of particle physics on the branes, see e.g. [16,21]. Here we focus on the simplest case of having only boundary branes, since we are interested ”