Improving predictions for the $pp\to t\bar{t}{W}^{+}$ process at the LHC with the MINLO method

We compare the standard NLO and $\mathtt{\text{MiNLO}}$ approaches for the full off-shell $pp\to t\bar{t}{W}^{+}+X$ process at the LHC, at both the integrated and differential cross-section levels. Contrary to NLO, in the $\mathtt{\text{MiNLO}}$ approach, which is now also available within the HELAC-NLO framework, renormalization and factorization scales are dynamically extracted and Sudakov form factors are incorporated. Results are particularly presented for the $pp\to t\bar{t}{W}^{+}j$ process at NLO accuracy in perturbative QCD using two different scale choices. Merged predictions up to two jets to improve the overall modeling of the full off-shell $pp\to t\bar{t}{W}^{+}+X$ process are also discussed.