A Supersymmetric Theory of Vector-like Leptons

Abstract

We study a supersymmetric extension of the vector-like lepton scenario, such that the vacuum instability induced by large lepton Yukawa couplings is lifted by the presence of superpartners at or below the TeV scale. In order to preserve the unification of gauge couplings, we introduce a full 16+\bar{16} of SO(10), and determine the maximal possible values for the Yukawa couplings consistent with perturbativity at the GUT scale. We find that the Higgs to diphoton decay rate can be enhanced by up to 50% while maintaining vacuum stability and keeping the new particle masses above 100 GeV, while larger enhancements are possible if the masses of the new particles are lowered further.

25 pages, 9 figures; v2: added references and discussion of CMS diphoton result; v3: minor improvements, JHEP version

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• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
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• Vacuum Stability, Perturbativity, EWPD and Higgs-to-diphoton rate in Type II Seesaw Models
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• Custodial Leptons and Higgs Decays
• Probing Charged Matter Through Higgs Diphoton Decay, Gamma Ray Lines, and EDMs
• Higgs diphoton rate and mass enhancement with vector-like leptons and the scale of supersymmetry
• $SU(2)\otimes SU(2)$ Gauge Extensions of the MSSM Revisited
• Inspecting the Higgs for New Weakly Interacting Particles
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Cited by in corpus (27)

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• Implications of LHC data on 125GeV Higgs-like boson for the Standard Model and its various extensions
• Light Stops, Light Staus and the 125 GeV Higgs
• New Physics Opportunities for Long-Lived Particles at Electron-Proton Colliders
• Muon $g-2$ in two Higgs doublet models with vectorlike leptons
• Exotic Leptons: Higgs, Flavor and Collider Phenomenology
• Diphoton Excess in Consistent Supersymmetric SU(5) Models with Vector-like Particles
• Very Light Charginos and Higgs Decays
• Precision Higgs Measurements: Constraints from New Oblique Corrections
• Baryogenesis and Dark Matter with Vector-like Fermions
• Vector Leptons in the Higgs Triplet Model
• Electroweak Baryogenesis, Electric Dipole Moments, and Higgs Diphoton Decays
• Vector-like leptons and extra gauge symmetry for the natural Higgs boson
• Flavor anomalies at the LHC and the R-parity violating supersymmetric model extended with vectorlike particles
• MSSM4G: Reviving Bino Dark Matter with Vector-like 4th Generation Particles
• Investigation of $(g-2{)}_{\mu }$ anomaly in the $\mu$-specific 2HDM with Vector like leptons and the phenomenological implications
• The Two Scales of New Physics in Higgs Couplings
• Vector Quarks in the Higgs Triplet Model
• Vector like leptons with extended Higgs sector
• Electroweak Baryogenesis with a Supersymmetric Sector
• Inert Higgs extension of the NMSSM
• Vector-like Sneutrino Dark Matter
• Machine learning study on single production of a singlet vectorlike lepton at the Large Hadron Collider