Report

PUBDB-2024-07916

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Studies of matrix element correction in t\bar{t} events using MG5_aMC@NLO+Pythia8

ATLAS Collaboration (Collaboration author)DESY*

2024

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Please use a persistent id in citations: doi:10.3204/PUBDB-2024-07916

Report No.: ATL-PHYS-PUB-2024-002

Abstract: We discuss the effect of matrix element corrections (MEC) to parton showers for t\bar{t} events usings the MG5_aMC@NLO + Pythia8 event generators. The studies are done for inclusive \ttbar production as well as for a setupusing the FxFx procedure with up to 2 additional jets in the matrix element. The predictions are additionally compared to the ATLAS default sample produced with the POWHEG-BOX and showered with Pythia8.

Keyword(s): p p: scattering ; top: pair production ; parton: showers ; quantum chromodynamics: perturbation theory ; perturbation theory: higher-order ; correction: higher-order ; higher-order: 1 ; parton: distribution function ; differential cross section: calculated ; ATLAS ; numerical calculations: Monte Carlo ; Top ; Modelling ; TOP

Note: All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PUBNOTES/ATL-PHYS-PUB-2024-002. The authors list may be incomplete!

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Contributing Institute(s):

1. LHC/ATLAS Experiment (ATLAS)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF4-611) (POF4-611)

Experiment(s):

1. LHC: ATLAS

Appears in the scientific report 2024

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Database coverage:
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