Multi-scale improved predictions for pp → tt̅W+ +X
Abstract
We compare standard fixed-order NLO QCD predictions for the full off-shell pp → e+νe μ-ν̅μ τ+ντ bb̅ (j) + X processes in the multi-lepton decay channel with the results obtained using the MiNLO approach. The MiNLO method, now also implemented in the Helac-NLO framework, provides a dynamic determination of the renormalization and factorization scale settings by identifying the most likely branching histories of the additional jets through an inverse kT-clustering algorithm. The inclusion of Sudakov form factors accounts for the large logarithms that arise in the presence of widely separated scales. We perform a dedicated comparison of the two approaches at both the integrated and differential (fiducial) cross-section levels for the LHC Run II energy of √s=13 TeV. Finally, we present the merging of the full off-shell predictions for pp → e+νe μ-ν̅μ τ+ντ bb̅ + X, pp → e+νe μ-ν̅μ τ+ντ bb̅ j +X and pp → e+νe μ-ν̅μ τ+ντ bb̅ jj, with the aim of improving the description of the underlying pp → e+νe μ-ν̅μ τ+ντ bb̅ + X process.
Versions
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BibTeX
@misc{dimitrakopoulos2026multiscale,
title = {{Multi-scale improved predictions for $\boldsymbolpp \to t\bartW^+ +X$}},
author = {Nikolaos Dimitrakopoulos and Malgorzata Worek},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2607.11652},
eprint = {2607.11652},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2607.11652},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Multi-scale improved predictions for pp → tt̅W^+ +X
AU - Nikolaos Dimitrakopoulos
AU - Malgorzata Worek
PY - 2026
DA - 2026/10/20
PB - arXiv
DO - 10.48550/arxiv.2607.11652
UR - https://arxiv.org/abs/2607.11652
AB - We compare standard fixed-order NLO QCD predictions for the full off-shell pp → e^+ν_e μ^-ν̅_μ τ^+ν_τ bb̅ (j) + X processes in the multi-lepton decay channel with the results obtained using the MiNLO approach. The MiNLO method, now also implemented in the Helac-NLO framework, provides a dynamic determination of the renormalization and factorization scale settings by identifying the most likely branching histories of the additional jets through an inverse k_T-clustering algorithm. The inclusion of Sudakov form factors accounts for the large logarithms that arise in the presence of widely separated scales. We perform a dedicated comparison of the two approaches at both the integrated and differential (fiducial) cross-section levels for the LHC Run II energy of √s=13 TeV. Finally, we present the merging of the full off-shell predictions for pp → e^+ν_e μ^-ν̅_μ τ^+ν_τ bb̅ + X, pp → e^+ν_e μ^-ν̅_μ τ^+ν_τ bb̅ j +X and pp → e^+ν_e μ^-ν̅_μ τ^+ν_τ bb̅ jj, with the aim of improving the description of the underlying pp → e^+ν_e μ^-ν̅_μ τ^+ν_τ bb̅ + X process.
ER -