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Measurement of the Soft-Drop Jet Mass in pp Collisions at s=13 TeV with the ATLAS Detector

Aaboud, M

Physical review letters, 2018, Vol.121 (9) [Periódico revisado por pares]

College Park: American Physical Society

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  • Título:
    Measurement of the Soft-Drop Jet Mass in pp Collisions at s=13 TeV with the ATLAS Detector
  • Autor: Aaboud, M
  • Assuntos: Computer simulation ; Fysik ; Large Hadron Collider ; Natural Sciences ; Naturvetenskap ; Particle collisions ; Physical Sciences ; PHYSICS OF ELEMENTARY PARTICLES AND FIELDS ; Quantum chromodynamics ; Sensors ; Standard model (particle physics) ; State of the art ; Subatomic Physics ; Subatomär fysik ; Substructures ; Transverse momentum
  • É parte de: Physical review letters, 2018, Vol.121 (9)
  • Notas: NFR/255182
    USDOE Office of Science (SC), High Energy Physics (HEP)
    SC0012704
    BNL-209295-2018-JACI
  • Descrição: Jet substructure observables have significantly extended the search program for physics beyond the standard model at the Large Hadron Collider. The state-of-the-art tools have been motivated by theoretical calculations, but there has never been a direct comparison between data and calculations of jet substructure observables that are accurate beyond leading-logarithm approximation. Such observables are significant not only for probing the collinear regime of QCD that is largely unexplored at a hadron collider, but also for improving the understanding of jet substructure properties that are used in many studies at the Large Hadron Collider. This Letter documents a measurement of the first jet substructure quantity at a hadron collider to be calculated at next-to-next-to-leading-logarithm accuracy. The normalized, differential cross section is measured as a function of log10ρ2, where ρ is the ratio of the soft-drop mass to the ungroomed jet transverse momentum. This quantity is measured in dijet events from 32.9 fb−1 of s=13  TeV proton-proton collisions recorded by the ATLAS detector. The data are unfolded to correct for detector effects and compared to precise QCD calculations and leading-logarithm particle-level Monte Carlo simulations.
  • Editor: College Park: American Physical Society
  • Idioma: Inglês;Norueguês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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