Speaker
Chen Zhou
(Duke University (US))
Description
We present a measurement of the production cross sections of top quark pairs in association with a W or Z boson. The measurement uses 20.3 $fb^{-1}$ of data from proton-proton collisions at $\sqrt{s}$=8 TeV recorded by the ATLAS detector at the LHC at CERN. Four different final states are considered: two opposite-sign leptons, two same-sign leptons, three leptons, and four leptons. We report the $t\bar{t}+Z$ and $t\bar{t}+W$ signal strength with respect to the Standard Model prediction, as well as the corresponding signal significance.
| Oral or Poster Presentation | Oral |
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Author
Chen Zhou
(Duke University (US))
