String derived exophobic <i>SU</i> (6) x <i>SU</i> (2) GUTs

Bernard, Laura, Faraggi, Alon E ORCID: 0000-0001-7123-6414, Glasser, Ivan, Rizos, John and Sonmez, Hasan
(2013) String derived exophobic <i>SU</i> (6) x <i>SU</i> (2) GUTs. NUCLEAR PHYSICS B, 868 (1). pp. 1-15.

This is the latest version of this item.

[img] Text
npbsu62.pdf - Unspecified
Access to this file is embargoed until Unspecified.

Download (177kB)


With the apparent discovery of the Higgs boson, the Standard Model has been confirmed as the theory accounting for all sub-atomic phenomena. This observation lends further credence to the perturbative unification in Grand Unified Theories (GUTs) and string theories. The free fermionic formalism yielded fertile ground for the construction of quasi--realistic heterotic--string models, which correspond to toroidal Z2xZ2 orbifold compactifications. In this paper we study a new class of heterotic-string models in which the GUT group is SU(6)xSU(2) at the string level. We use our recently developed fishing algorithm to extract an example of a three generation SU(6)xSU(2) GUT model. We explore the phenomenology of the model and show that it contains the required symmetry breaking Higgs representations. We show that the model admits flat directions that produce a Yukawa coupling for a single family. The novel feature of the SU(6)xSU(2) string GUT models is that they produce an additional family universal anomaly free U(1)symmetry that may remain unbroken below the string scale. The massless spectrum of the model is free of exotic states.

Item Type: Article
Additional Information: 20 pages. Standard LaTeX
Uncontrolled Keywords: Heterotic-string models, GUTs
Depositing User: Symplectic Admin
Date Deposited: 23 Jul 2015 09:59
Last Modified: 14 Oct 2023 12:26
DOI: 10.1016/j.nuclphysb.2012.11.001
Related URLs:

Available Versions of this Item

  • String derived exophobic <i>SU</i> (6) x <i>SU</i> (2) GUTs. (deposited 23 Jul 2015 09:59) [Currently Displayed]