Gauge coupling flux thresholds, exotic matter and the unification scale in F-SU(5) GUT

Abstract

We explore the gauge coupling relations and the unification scale in F-theory SU(5) GUT broken down to the Standard Model by an internal U(1)Y gauge flux. We consider variants with exotic matter representations which may appear in these constructions and investigate their role in the effective field theory model. We make a detailed investigation on the conditions imposed on the extraneous matter to raise the unification scale and make the color triplets heavy in order to avoid fast proton decay. We also discuss in brief the implications on the gaugino masses.

20 pages, 3 figures, references and extended comments on KK thresholds effects added

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• E6 Models from F-theory
• Towards a Realistic F-theory GUT
• Dirac gauginos and unification in F-theory
• Supersymmetry Breaking Scalar Masses and Trilinear Soft Terms in Generalized Minimal Supergravity
• The Conformal Sector of F-theory GUTs
• Building SO(10) models from F-theory
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• Realistic Standard Model Fermion Mass Relations in Generalized Minimal Supergravity (GmSUGRA)
• Unification, KK-thresholds and the top Yukawa coupling in F-theory GUTs
• F-theory Yukawa Couplings and Supersymmetric Quantum Mechanics
• Phenomenology with F-theory SU(5)
• Grand Unification and Exotic Fermions
• Diphoton Resonance in F-theory inspired Flipped SO(10)
• FCNCs, Proton Stability, $g_{\mu }-2$ Discrepancy, Neutralino cold Dark Matter in Flipped $SU(5)\times U(1{)}_{\chi }$ from $F$ Theory with $A_4$ Symmetry