Light Z ′ in heterotic string standardlike models

The discovery of the Higgs boson at the LHC supports the hypothesis that the Standard Model provides an effective parametrization of all subatomic experimental data up to the Planck scale. String theory, which provides a viable perturbative approach to quantum gravity, requires for its consistency t...

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Bibliographic Details
Published in:Physical review. D, Particles, fields, gravitation, and cosmology Particles, fields, gravitation, and cosmology, 2014-05, Vol.89 (10), Article 105023
Main Authors: Athanasopoulos, P., Faraggi, A. E., Mehta, V. M.
Format: Article
Language:English
Subjects:
Consistency
Cosmology
Gages
Gauges
Quantum gravity
Scale (ratio)
Strings
Symmetry
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Summary:The discovery of the Higgs boson at the LHC supports the hypothesis that the Standard Model provides an effective parametrization of all subatomic experimental data up to the Planck scale. String theory, which provides a viable perturbative approach to quantum gravity, requires for its consistency the existence of additional gauge symmetries beyond the Standard Model. The construction of heterotic string models with a viable light Z' is, however, highly constrained. We outline the construction of standardlike heterotic string models that allow for an additional Abelian gauge symmetry that may remain unbroken down to low scales. We present a string inspired model, consistent with the string constraints.
ISSN:1550-7998
1550-2368
DOI:10.1103/PhysRevD.89.105023