Multi-scale improved predictions for pp→ tt̅W ++X
- 1RWTH Aachen University
Abstract
A bstract : We compare standard fixed-order NLO QCD predictions for the full off-shell pp→ e+νeμ −ν ̅μ τ +ντ bb ̅(j)+X processes in the multi-lepton decay channel with the results obtained using the M i NLO approach. The M i NLO method, now also implemented in the H elac -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+νeμ −ν ̅μ τ +ντ bb ̅+X , pp→ e+νeμ −ν ̅μ τ +ντ bb ̅j+X and pp→ e+νeμ −ν ̅μ τ +ντ bb ̅jj , with the aim of improving the description of the underlying pp→ e+νeμ −ν ̅μ τ +ντ bb ̅+X process.
Versions
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BibTeX
@article{dimitrakopoulos2026multiscale,
title = {{Multi-scale improved predictions for $$pp\to t\overlinetW ^++X$$}},
author = {Nikolaos Dimitrakopoulos and Malgorzata Worek},
journal = {Journal of High Energy Physics},
year = {2026},
month = oct,
doi = {10.1007/jhep10(2026)190},
url = {https://link.springer.com/article/10.1007/JHEP10(2026)190},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Multi-scale improved predictions for pp→ tt̅W ^++X
AU - Nikolaos Dimitrakopoulos
AU - Malgorzata Worek
PY - 2026
DA - 2026/10/16
JO - Journal of High Energy Physics
DO - 10.1007/jhep10(2026)190
UR - https://link.springer.com/article/10.1007/JHEP10(2026)190
AB - A bstract : We compare standard fixed-order NLO QCD predictions for the full off-shell pp→ e^+ν_eμ ^−ν ̅_μ τ ^+ν_τ bb ̅(j)+X processes in the multi-lepton decay channel with the results obtained using the M i NLO approach. The M i NLO method, now also implemented in the H elac -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_eμ ^−ν ̅_μ τ ^+ν_τ bb ̅+X , pp→ e^+ν_eμ ^−ν ̅_μ τ ^+ν_τ bb ̅j+X and pp→ e^+ν_eμ ^−ν ̅_μ τ ^+ν_τ bb ̅jj , with the aim of improving the description of the underlying pp→ e^+ν_eμ ^−ν ̅_μ τ ^+ν_τ bb ̅+X process.
SN - 1029-8479
ER -