Search for the associated production of the Higgs boson with a top quark pair in multilepton final states with the ATLAS detector
- Aad, Georges et al
- arXiv:1506.05988CERN-PH-EP-2015-109
| width=0.5\linewidth |
| width=0.5\linewidthThe spectrum of the number of jets expected and observed in the \ttz (left) and \ttw (right) validation regions (VR). The hatched band represents the total uncertainty on the background prediction in each bin. The ``non-prompt'' backgrounds are those with a lepton arising from a hadron decay or from a photon conversion in detector material. Rare processes include $t Z$, $t\bar t WW$, triboson, $t\bar t t\bar t$, and $t H$ production. The red line corresponds to the \tth signal predicted by the SM. |
| Best-fit values of the signal strength parameter $\mu = \sigma_{\tth, \mathrm{obs}}/\sigma_{\tth, \mathrm{SM}}$. For the $4\ell$ $Z$-depleted category, $\mu < -0.17$ results in a negative expected total yield and so the lower uncertainty is truncated at this point. |