: : s-channel representative Feynman diagrams induced by X(6900) for gg→J/ψJ/ψ.
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Dependence of Nsig on the effective coupling constants gggX and gc¯cX at a combination of the luminosity of √s=7,8 and 13TeV LHC. The parameter space region above the red line is excluded by the experimental constraint of Γ[X(6900)→gg]+Γ[X(6900)→c¯c]<Γ[X(6900)→all]≃168MeV. The black lines stand for the experimental constraint given by the yield of Nsig=784±148.
Di-J/ψ invariant mass distribution of cross sections (upper) and event numbers (lower) for both signal and SM background for pp→J/ψJ/ψ→4μ at the benchmark point B. S and ^S represent the new physics signals induced by X(6900) with and without interference effect, respectively.
Di-J/ψ invariant mass distribution of cross sections (upper) and event numbers (lower) for both signal and SM background for pp→J/ψJ/ψ→4μ at the benchmark point B. S and ^S represent the new physics signals induced by X(6900) with and without interference effect, respectively.