Back to 1974: The $\mathcal{Q}$-onium

Abstract

We show that the 750 GeV di-photon excess could be explained by the $\mathcal{Q}-$onium system of a new QCD-like theory with fermions vectorial under the SM. Beside the spin-0 di-photon singlet this scenario predicts almost degenerate colored scalars and spin-1 resonances analogous to the $J/\Psi$ in QCD. All these states are within the reach of the LHC. An apparent large width can be explained as due to production of excited states with splitting $\Delta m\sim \Gamma$.

arXiv comment6 pages. v2: QCD effects and splitting of SU(2) multiplets added. v3: final version to appear in PLB

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Cited by in corpus (12)

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• LHC signatures of neutral pseudo-Goldstone boson in the E6CHM
• Heavy Leptonium as the Origin of the 750 GeV Diphoton Excess
• Learning from the New Higgs-like Scalar before It Vanishes
• Implications of the 750 GeV gamma-gamma Resonance as a Case Study for the International Linear Collider
• Breakdown of Effective Field Theory for a Gluon Initiated Resonance
• Towards gauge unified, supersymmetric hidden strong dynamics
• Probing a new strongly interacting sector via composite diboson resonances
• Implications of perturbative unitarity for scalar di-boson resonance searches at LHC