2016/05/12 by C.D. Froggatt, Colin D. Froggatt, Froggatt, Colin D. +3
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.48550/arxiv.1605.03909
arxiv created 2016/05/12 · openalex publication_date 2016/05/12 · arxiv updated 2016/05/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Crude estimates are made of the branching ratios and pair production cross-section for our previously proposed bound state S of six top and six antitop quarks identified with the diphoton excess recently observed in ATLAS and CMS. We estimate the pair production cross section to be approximately 12 times that for fourth family quarks. Hence we predict σ(pp → SS + anything) ≈ 2 pb at 13 TeV and an increase by a factor 10 over the cross section at 8 TeV. Crude estimates of the main branching ratios relative to the diphoton decay give Γ(S→ γ+γ) ∝ 1, Γ(S→ t + t)∝ 378, Γ(S → gluon+gluon)∝ 117, Γ(S→ Higgs+Higgs)∝ 15, Γ(S→ W+W)∝ 30 and Γ(S→ Z+Z) = 15. These estimates are consistent with the LHC bounds at 8 TeV within a factor 1.25. We expect the S → γγ events to be produced together with another S resonance decaying typically into top-antitop or gluon-gluon jets.