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Constraints on the Higgs boson width from off-shell production and decay to Z-boson pairs

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Academic year: 2021

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Fig. 1. Lowest order contributions to the main ZZ production processes: (left) quark-initiated production, qq → ZZ, (center) gg continuum background production, gg → ZZ, and (right) Higgs-mediated gg production, gg → H → ZZ, the signal.
Fig. 2. Distribution of the four-lepton invariant mass in the range 100 < m 4  <
Fig. 4. Distribution of the transverse mass in the 2  2 ν channel. Points represent the data, filled histograms the expected contributions from the backgrounds, and from the gluon fusion (gg) and vector boson fusion (VV) SM processes (including the Higgs-me
Fig. 5. Scan of the negative log-likelihood, − 2  ln L , as a function of Γ H for the combined fit of the 4  and 2  2 ν channels (blue thick lines), for the 4  channel alone in the off-shell and on-shell regions (dark red lines), and for the 2  2 ν channel

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