Measurement of associated production of vector bosons and $t\bar{t}$ at $\sqrt{s}$= 7 TeV
- Chatrchyan, Serguei et al
- arXiv:1303.3239CMS-TOP-12-014CERN-PH-EP-2013-033
 | Most important leading-order Feynman diagrams for $\ttbar\PW$ and $\ttbar \cPZ$ production in proton-proton collisions. The charge conjugate of the diagrams shown is implied. |
 | Most important leading-order Feynman diagrams for $\ttbar\PW$ and $\ttbar \cPZ$ production in proton-proton collisions. The charge conjugate of the diagrams shown is implied. |
 | Event yields after final selection requirements, separated in lepton flavor channels for the trilepton~(\cmsLeft) and same-sign dilepton~(\cmsRight) analyses. The expected contributions from signal and background processes are shown, and the uncertainty on the estimated background yield is superimposed with a grey hashed band. |
 | Event yields after final selection requirements, separated in lepton flavor channels for the trilepton~(\cmsLeft) and same-sign dilepton~(\cmsRight) analyses. The expected contributions from signal and background processes are shown, and the uncertainty on the estimated background yield is superimposed with a grey hashed band. |
 | Measurements of the $\ttbar \cPZ$ and $\ttbar V$ production cross sections, in the same-sign dilepton~(left) and trilepton channel~(right), respectively. The measurements are compared to the NLO calculations (horizontal black lines) and their uncertainty (grey bands). Internal error bars for the measurements represent the statistical component of the uncertainty. |
 | Distributions of kinematic variables after final selection requirements for the trilepton analysis: transverse momentum of the $\cPZ$ boson~(left), $\HT$~(center) and \ETslash~(right). The uncertainty on the background yield is superimposed with a grey hashed band. |
 | Distributions of kinematic variables after final selection requirements for the trilepton analysis: transverse momentum of the $\cPZ$ boson~(left), $\HT$~(center) and \ETslash~(right). The uncertainty on the background yield is superimposed with a grey hashed band. |
 | Distributions of kinematic variables after final selection requirements for the trilepton analysis: transverse momentum of the $\cPZ$ boson~(left), $\HT$~(center) and \ETslash~(right). The uncertainty on the background yield is superimposed with a grey hashed band. |
 | Distributions of kinematic variables after final selection requirements for the same-sign dilepton analysis: leading lepton transverse momentum~(left), $\HT$~(center) and \ETslash~(right). The uncertainty on the background yield is superimposed with a grey hashed band. |
 | Distributions of kinematic variables after final selection requirements for the same-sign dilepton analysis: leading lepton transverse momentum~(left), $\HT$~(center) and \ETslash~(right). The uncertainty on the background yield is superimposed with a grey hashed band. |
 | Distributions of kinematic variables after final selection requirements for the same-sign dilepton analysis: leading lepton transverse momentum~(left), $\HT$~(center) and \ETslash~(right). The uncertainty on the background yield is superimposed with a grey hashed band. |