Measurements of inclusive and differential fiducial cross-sections of tt¯ production with additional heavy-flavour jets in proton-proton collisions at √s = 13 TeV with the ATLAS detector

ATLAS Collaboration, Paul Newman

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)
78 Downloads (Pure)

Abstract

This paper presents measurements of tt¯ production in association with additional b-jets in pp collisions at the LHC at a centre-of-mass energy of 13 TeV. The data were recorded with the ATLAS detector and correspond to an integrated luminosity of 36.1 fb−1. Fiducial cross-section measurements are performed in the dilepton and lepton-plus-jets tt¯ decay channels. Results are presented at particle level in the form of inclusive cross-sections of tt¯ final states with three and four b-jets as well as differential cross-sections as a function of global event properties and properties of b-jet pairs. The measured inclusive fiducial cross-sections generally exceed the tt¯bb¯¯ predictions from various next-to-leading-order matrix element calculations matched to a parton shower but are compatible within the total uncertainties. The experimental uncertainties are smaller than the uncertainties in the predictions. Comparisons of state-of-the-art theoretical predictions with the differential measurements are shown and good agreement with data is found for most of them.
Original languageEnglish
Article number46
Number of pages66
JournalJHEP
Volume2019
Issue number4
DOIs
Publication statusPublished - 4 Apr 2019

Bibliographical note

62 pages in total, author list starting page 46, 17 figures, 11 tables, submitted to JHEP. All figures, including auxiliary figures, are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2017-12

Keywords

  • hep-ex
  • Hadron-Hadron scattering (experiments)
  • Heavy quark production

Fingerprint

Dive into the research topics of 'Measurements of inclusive and differential fiducial cross-sections of tt¯ production with additional heavy-flavour jets in proton-proton collisions at √s = 13 TeV with the ATLAS detector'. Together they form a unique fingerprint.

Cite this