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Gauge coupling unification in E 6 F-theory GUTs with matter and bulk exotics from flux breaking

Gauge coupling unification in E 6 F-theory GUTs with matter and bulk exotics from flux breaking
Gauge coupling unification in E 6 F-theory GUTs with matter and bulk exotics from flux breaking
We consider gauge coupling unification in E 6 F-Theory Grand Unified Theories (GUTs) where E 6 is broken to the Standard Model (SM) gauge group using fluxes. In such models there are two types of exotics that can affect gauge coupling unification, namely matter exotics from the matter curves in the 27 dimensional representation of E 6 and the bulk exotics from the adjoint 78 dimensional representation of E 6. We explore the conditions required for either the complete or partial removal of bulk exotics from the low energy spectrum. In the latter case we shall show that (miraculously) gauge coupling unification may be possible even if there are bulk exotics at the TeV scale. Indeed in some cases it is necessary for bulk exotics to survive to the TeV scale in order to cancel the effects coming from other TeV scale matter exotics which would by themselves spoil gauge coupling unification. The combination of matter and bulk exotics in these cases can lead to precise gauge coupling unification which would not be possible with either type of exotics considered by themselves. The combination of matter and bulk exotics at the TeV scale represents a unique and striking signature of E 6 F-theory GUTs that can be tested at the LHC.
supersymmetry phenomenology, strings and branes phenomenology
1-28
Callaghan, James C.
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King, Stephen F.
f8c616b7-0336-4046-a943-700af83a1538
Leontaris, George K.
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Callaghan, James C.
a0c89c0a-eb42-4c7b-8c8c-7680e8b75a22
King, Stephen F.
f8c616b7-0336-4046-a943-700af83a1538
Leontaris, George K.
f4bef063-d030-4e71-a2aa-a046297e31cf

Callaghan, James C., King, Stephen F. and Leontaris, George K. (2013) Gauge coupling unification in E 6 F-theory GUTs with matter and bulk exotics from flux breaking. The Journal of High Energy Physics, 2013 (12), 1-28. (doi:10.1007/JHEP12(2013)037).

Record type: Article

Abstract

We consider gauge coupling unification in E 6 F-Theory Grand Unified Theories (GUTs) where E 6 is broken to the Standard Model (SM) gauge group using fluxes. In such models there are two types of exotics that can affect gauge coupling unification, namely matter exotics from the matter curves in the 27 dimensional representation of E 6 and the bulk exotics from the adjoint 78 dimensional representation of E 6. We explore the conditions required for either the complete or partial removal of bulk exotics from the low energy spectrum. In the latter case we shall show that (miraculously) gauge coupling unification may be possible even if there are bulk exotics at the TeV scale. Indeed in some cases it is necessary for bulk exotics to survive to the TeV scale in order to cancel the effects coming from other TeV scale matter exotics which would by themselves spoil gauge coupling unification. The combination of matter and bulk exotics in these cases can lead to precise gauge coupling unification which would not be possible with either type of exotics considered by themselves. The combination of matter and bulk exotics at the TeV scale represents a unique and striking signature of E 6 F-theory GUTs that can be tested at the LHC.

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Published date: 6 December 2013
Keywords: supersymmetry phenomenology, strings and branes phenomenology
Organisations: Physics & Astronomy

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Local EPrints ID: 369356
URI: https://eprints.soton.ac.uk/id/eprint/369356
PURE UUID: d475352d-0379-44ba-bd8c-7683d58b2c66

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Date deposited: 24 Sep 2014 11:37
Last modified: 19 Jul 2019 21:01

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Author: James C. Callaghan
Author: Stephen F. King
Author: George K. Leontaris

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