Spinor-vector duality and sterile neutrinos in string derived models

The MiniBooNE collaboration found evidence for the existence of sterile neutrinos, at a mass scale comparable to the active left-handed neutrinos. While sterile neutrinos arise naturally in large volume string scenarios, they are more difficult to accommodate in heterotic-string derived models that...

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 1586; no. 1; pp. 12026 - 12033
Main Author Faraggi, Alon E.
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.08.2020
Subjects
Neutrinos
Physics
Standard model (particle physics)
Strings
Symmetry
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Summary:The MiniBooNE collaboration found evidence for the existence of sterile neutrinos, at a mass scale comparable to the active left-handed neutrinos. While sterile neutrinos arise naturally in large volume string scenarios, they are more difficult to accommodate in heterotic-string derived models that reproduce the GUT embedding of the Standard Model particles. Sterile neutrinos in heterotic-string models imply the existence of an additional Abelian gauge symmetry at low scales, possibly within reach of contemporary colliders. I discuss the construction of string derived Z′ models that utilise the spinor-vector duality to guarantee that the extra U(1)Z′ symmetry can remain unbroken down to low scales.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1586/1/012026