Extended Data Fig. 4: Distributions of \({m}_{{{{{{\rm{T}}}}}}}^{{{{{{\rm{Z}}}}}}{{{{{\rm{Z}}}}}}}\) in the different Nj categories of the 2ℓ2ν signal region.
From: Measurement of the Higgs boson width and evidence of its off-shell contributions to ZZ production
The postfit distributions of the transverse ZZ invariant mass are displayed in the jet multiplicity categories of Nj = 0 (left), = 1 (middle), and ≥2 (right) with a missing transverse momentum requirement of \({p}_{{{{{{\rm{T}}}}}}}^{{{{{{\rm{miss}}}}}}} > 200\,{{{{{\rm{GeV}}}}}}\) to enrich H boson contributions. The color legend for the stacked or dot-dashed histograms is given above the plots. The stacked histogram is split into the following components: gg (light pink) and EW (dark pink) ZZ production, instrumental \({p}_{{{{{{\rm{T}}}}}}}^{{{{{{\rm{miss}}}}}}}\) background (purple), nonresonant proceses (gray), the \({{{{{\rm{q}}}}}}\overline{{{{{{\rm{q}}}}}}}\to {{{{{\rm{Z}}}}}}{{{{{\rm{Z}}}}}}\) (blue) and \({{{{{\rm{q}}}}}}\overline{{{{{{\rm{q}}}}}}}^{\prime} \to {{{{{\rm{W}}}}}}{{{{{\rm{Z}}}}}}\) (green) processes, and tZ+X production, where X refers to any other particle. Postfit refers to individual fits of the data (shown as black points with error bars as uncertainties at 68% CL) to the combined 2ℓ2ν + 4ℓ sample, including the WZ control region, and assuming either SM H boson parameters (stacked histogram with the hashed band as the total postfit uncertainty at 68% CL) or no off-shell H boson production (dot-dashed gold line). The middle panels along the vertical show the ratio of the data or dashed histograms to the stacked histogram, and the lower panels show the predicted relative contributions of each process. The rightmost bins contain the overflow.
