Masses of Third Family Vector-like Quarks and Leptons in Yukawa-Unified $E_6$

Aditya Hebbar; George K. Leontaris; Qaisar Shafi

doi:10.1103/PhysRevD.93.111701

paper

Masses of Third Family Vector-like Quarks and Leptons in Yukawa-Unified $E_{6}$

arXiv:1604.08328 · doi:10.1103/PhysRevD.93.111701

Abstract

In supersymmetric $E_{6}$ the masses of the third family quarks and charged lepton, $t - b - τ$ , as well as the masses of the vector-like quarks and leptons, $D - D ˉ$ and $L - L ˉ$ , may arise from the coupling $2 7_{3}$ x $2 7_{3}$ x $2 7_{H}$ , where $2 7_{3}$ and $2 7_{H}$ denote the third family matter and Higgs multiplets respectively. We assume that the SO(10) singlet component in $2 7_{H}$ acquires a TeV scale VEV which spontaneously breaks U(1) $_{ψ}$ and provides masses to the vector-like particles in $2 7_{3}$ , while the MSSM doublets in $2 7_{H}$ provide masses to $t, b$ and $τ$ . Imposing Yukawa coupling unification $h_{t} = h_{b} = h_{τ} = h_{D} = h_{L}$ at $M_{G U T}$ and employing the ATLAS and CMS constraints on the $Z_{ψ}^{'}$ boson mass, we estimate the lower bounds on the third family vector-like particles $D - D ˉ$ and $L - L ˉ$ masses to be around 5.85 TeV and 2.9 TeV respectively. These bounds apply in the supersymmetric limit.

arXiv comment10 pages, 4 figures

Masses of Third Family Vector-like Quarks and Leptons in Yukawa-Unified $E_{6}$

Abstract

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Cited by in corpus (9)

Masses of Third Family Vector-like Quarks and Leptons in Yukawa-Unified E6​

Abstract

References in corpus (48)

Cited by in corpus (9)

Masses of Third Family Vector-like Quarks and Leptons in Yukawa-Unified $E_{6}$