${{\boldsymbol t}}{{\overline{\boldsymbol t}}}{{\boldsymbol Z}}$ Production Cross Section in ${{\boldsymbol p}}{{\boldsymbol p}}$ Collisions at $\sqrt {s }$ = 13 TeV INSPIRE search

VALUE (pb) DOCUMENT ID TECN  COMMENT
• • • We do not use the following data for averages, fits, limits, etc. • • •
$0.95$ $\pm0.08$ $\pm0.10$ 1
AABOUD
2019AR
ATLS 2,3,4${{\mathit \ell}}$ + $\not E_T$ + jets
$0.99$ ${}^{+0.09}_{-0.08}$ ${}^{+0.12}_{-0.10}$ 2
SIRUNYAN
2018BS
CMS ${{\mathit t}}$ ${{\overline{\mathit t}}}$ ${{\mathit Z}}$ $\rightarrow$ 3,4 ${{\mathit \ell}}$ + $\not E_T$ + jets
1  AABOUD 2019AR based on 35.9 fb${}^{-1}$ of data. ${{\mathit t}}{{\overline{\mathit t}}}{{\mathit W}}$ and ${{\mathit t}}{{\overline{\mathit t}}}{{\mathit Z}}$ cross sections are simultaneously measured using a combined fit to the events divided into multiple regions. The result is consistent with the SM prediction at NLO $0.88$ ${}^{+0.09}_{-0.11}$ pb. It is also used to constrain the Wilson coefficients for dimension-six operators which modify the ${{\mathit t}}{{\overline{\mathit t}}}{{\mathit Z}}$ vertex.
2  Based on 35.9 fb${}^{-1}$ of proton-proton data taken at $\sqrt {s }$ = 13 TeV. The result is consistent with the SM prediction and is used to constrain the Wilson coefficients for dimension-six operators describing new interactions. The result is consistent with the SM prediction at NLO $0.839$ $\pm0.101$ pb.
  References:
AABOUD 2019AR
PR D99 072009 Measurement of the $t\bar{t}Z$ and $t\bar{t}W$ cross sections in proton-proton collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
SIRUNYAN 2018BS
JHEP 1808 011 Measurement of the cross section for top quark pair production in association with a W or Z boson in proton-proton collisions at $\sqrt{s} =$ 13 TeV