Top-quark pair hadroproduction in association with a heavy boson at NLO+NNLL including EW corrections

Understand

This work studies the associated production of a top-quark pair with a $W$, $Z$, or Higgs boson at the LHC.

• Predictions for the total cross sections as well as for several differential distributions of the massive particles in the final state are provided.
• These predictions, valid for the LHC operating at $13$ TeV, include without any approximation all the NLO electroweak and QCD contributions of $\mathcal{O}(\alpha_s^{i} \alpha^{j+1})$ with $i+j=2,3$.
• In addition, the predictions presented here improve upon the NLO QCD results by adding the effects of soft gluon emission corrections resummed to next-to-next-to-leading logarithmic accuracy.