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Light Z′ in heterotic string standardlike models

P. Athanasopoulos*, A. E. Faraggi†, and V. M. Mehta‡

  • Department of Mathematical Sciences, University of Liverpool, Liverpool L69 7ZL, United Kingdom

  • *panos@liv.ac.uk
  • †alon.faraggi@liv.ac.uk
  • ‡Viraf.Mehta@liv.ac.uk
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Phys. Rev. D 89, 105023 – Published 22 May, 2014

DOI: https://doi.org/10.1103/PhysRevD.89.105023

Abstract

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.

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Phys. Rev. D 89, 105023– Published 22 May, 2014
  • Received 10 March 2014

© 2014 American Physical Society

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