Modelling of rare top quark processes at √s = 13 TeV in ATLAS

Research output: Contribution to specialist publication › Featured article/Feature cover › Contributed › peer-review

Contributors

  • The ATLAS collaboration - , University of Bucharest, iThemba Laboratory for Accelerator Based Sciences, University of Pretoria, University of South Africa, University of Zululand, Cadi Ayyad University, New York University Abu Dhabi, University of Granada, CERN, University of California at Berkeley, University of Georgia (Tbilisi), Yeditepe University, Mohammed VI Polytechnic University (Author)
  • Frank Siegert - , Chair of Particle Physics (Author)
  • University of Valencia
  • University of Glasgow
  • University of Arizona
  • University of Wuppertal
  • University of Udine
  • Southern Methodist University
  • University of Trieste

Abstract

This note documents modelling studies for some rare processes involving top quarks carried out by the ATLAS Collaboration. Different Monte Carlo event generators for five processes: ttW, ttZ/γ∗, ttH, tttt and tWZ have been compared. Next-to-leading-order multileg merged configurations and rare electroweak production mechanisms have been studied. The impact of the choice of the renormalization and factorization scales on the predicted cross-sections and selected observables is presented and discussed. These studies aim to improve ATLAS Monte Carlo simulations and reduce the systematic theoretical modelling uncertainties, which are already a limiting factor in several experimental LHC results.

Details

Original languageEnglish
JournalATLAS public notes
Publication statusPublished - 16 Sept 2020
Peer-reviewedYes
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