#### ${{\mathit t}}{{\overline{\mathit t}}}{{\mathit W}}$ Production Cross Section in ${{\mathit p}}{{\mathit p}}$ Collisions at $\sqrt {s }$ = 13 TeV

VALUE (pb) DOCUMENT ID TECN  COMMENT
• • We do not use the following data for averages, fits, limits, etc. • •
$0.87$ $\pm0.13$ $\pm0.14$ 1
 2019 AR
ATLS 2,3,4${{\mathit \ell}}$ + $\not E_T$ + jets
$0.77$ ${}^{+0.12}_{-0.11}$ ${}^{+0.13}_{-0.12}$ 2
 2018 BS
CMS ${{\mathit t}}$ ${{\overline{\mathit t}}}$ ${{\mathit W}}$ $\rightarrow$ same sign dilepton + $\not E_T$ + 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 $0.60$ ${}^{+0.08}_{-0.07}$ 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 $0.628$ $\pm0.082$ 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