Gauge Coupling Unification in the Exceptional Supersymmetric Standard Model

Abstract

We consider the renormalisation group flow of gauge couplings within the so-called exceptional supersymmetric standard model (E${}_6$SSM) based on the low energy matter content of 27 dimensional representations of the gauge group $E_6$, together with two additional non-Higgs doublets. The two--loop beta functions are computed, and the threshold corrections are studied in the E${}_6$SSM. Our results show that gauge coupling unification in the E${}_6$SSM can be achieved for phenomenologically acceptable values of ${\alpha }_3(M_Z)$, consistent with the central measured low energy value, unlike in the minimal supersymmetric standard model (MSSM) which, ignoring the effects of high energy threshold corrections, requires significantly higher values of ${\alpha }_3(M_Z)$, well above the experimentally measured central value.

15 pages, 1 figure, references added, section 4 expanded, table added

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Cited by in corpus (57)

• The Next-to-Minimal Supersymmetric Standard Model
• The Constrained Exceptional Supersymmetric Standard Model
• Predictions of the Constrained Exceptional Supersymmetric Standard Model
• Minimal E_6 Supersymmetric Standard Model
• Constrained Exceptional Supersymmetric Standard Model with a Higgs Near 125 GeV
• Leptogenesis in the Exceptional Supersymmetric Standard Model: flavour dependent lepton asymmetries
• 750 GeV Diphoton Resonance from Singlets in an Exceptional Supersymmetric Standard Model
• Novel Higgs Decays and Dark Matter in the E(6)SSM
• LHC Signatures of the Constrained Exceptional Supersymmetric Standard Model
• E6 inspired SUSY models with exact custodial symmetry
• Solving the Flavour Problem in Supersymmetric Standard Models with Three Higgs Families
• Exotic Higgs decays in the E6 inspired SUSY models
• Neutralino Dark Matter in the USSM
• Neutralino Dark Matter with Inert Higgsinos and Singlinos
• Planck Scale Unification in a Supersymmetric Standard Model
• Non-Standard Higgs Decays in U(1) Extensions of the MSSM
• Quasi-fixed point scenarios and the Higgs mass in the E6 inspired SUSY models
• Reviving trinification models through an ${\mathrm{E}}_6$-extended supersymmetric GUT
• Threshold Corrections in the Exceptional Supersymmetric Standard Model
• E6 Models from F-theory
• Dark Matter in a Constrained $E_6$ Inspired SUSY Model
• Exceptional Supersymmetric Standard Models with non-Abelian Discrete Family Symmetry
• Gauge Kinetic Mixing in the $E_6$SSM
• Bino Dark Matter and Big Bang Nucleosynthesis in the Constrained E6SSM with Massless Inert Singlinos
• On a radiative origin of the Standard Model from Trinification
• Searching for signatures of $E_6$
• Implications of large CP Violation in B mixing for Supersymmetric Standard Models
• E6 inspired composite Higgs model
• Z' mass limits and the naturalness of supersymmetry
• Constraining Grand Unification using first and second generation sfermions
• SU(5) Completion of the Dark Scalar Doublet Model of Radiative Neutrino Mass
• Dark matter candidates in the constrained Exceptional Supersymmetric Standard Model
• Exceptional Lie Algebra $E_{7(-25)}$ (Multiplets and Invariant Differential Operators)
• Leptogenesis as an origin of dark matter and baryon asymmetries in the E6 inspired SUSY models
• Cosmological Constant in a Model with Superstring-Inspired E_6 Unification and Shadow Theta-Particles
• Discovering $E_6$ SUSY models in gluino cascade decays at the LHC
• LHC signatures of neutral pseudo-Goldstone boson in the E6CHM
• E6 inspired SUSY models with Custodial Symmetry
• Mirror World with Broken Mirror Parity, E(6) Unification and Cosmology
• Baryon asymmetry generation in the E6CHM
• NMSSM+
• Perturbative unification of gauge couplings in supersymmetric $E_6$ models
• Nonstandard Higgs Decays and Dark Matter in the E6SSM
• Dark matter and Collider signals in supersymmetric $U(1{)}^{\prime }$ models with non-universal $Z^{\prime }$ couplings
• E6 inspired composite Higgs model and 750 GeV diphoton excess
• Leptogenesis and Dark Matter-Nucleon Scattering Cross Section in the SE6SSM
• Anomaly Mediation, Fayet-Iliopoulos D-terms and the Renormalisation Group
• Seesaw scales and the steps from the Standard Model towards superstring-inspired flipped E_6
• TeV-scale leptoquark searches at the LHC and their E${}_6$SSM Interpretation
• Phenomenological Aspects of the $E_6$SSM
• Nonstandard Higgs decays in the E6 inspired SUSY models
• Phenomenological aspects of Supersymmetry: SUSY models and electroweak symmetry breaking
• Gauge coupling unification with extra Higgs doublets
• Nonstandard Higgs decays in the E(6)SSM
• A Review of the Exceptional Supersymmetric Standard Model
• Generation of Flavour Dependent Lepton Asymmetries in the E${}_6$SSM
• Interactions of exotic neutralino dark matter with nucleons in $U(1)$ extensions of the MSSM originating from $E_6$ GUTs