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Measurement of lepton differential distributions and the top quark mass in [Formula omitted] production in pp collisions at [Formula omitted] TeV with the ATLAS detector

Aaboud, M ; Aad, G ; Abbott, B ; Abdinov, O ; Abeloos, B ; Abidi, S. H ; AbouZeid, O. S

The European physical journal. C, Particles and fields, 2017-11, Vol.77 (11) [Periódico revisado por pares]

Springer

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  • Título:
    Measurement of lepton differential distributions and the top quark mass in [Formula omitted] production in pp collisions at [Formula omitted] TeV with the ATLAS detector
  • Autor: Aaboud, M ; Aad, G ; Abbott, B ; Abdinov, O ; Abeloos, B ; Abidi, S. H ; AbouZeid, O. S
  • Assuntos: Comparative analysis ; Detection equipment ; Measurement
  • É parte de: The European physical journal. C, Particles and fields, 2017-11, Vol.77 (11)
  • Descrição: This paper presents single lepton and dilepton kinematic distributions measured in dileptonic [Formula omitted] events produced in 20.2 [Formula omitted] of [Formula omitted] TeV pp collisions recorded by the ATLAS experiment at the LHC. Both absolute and normalised differential cross-sections are measured, using events with an opposite-charge [Formula omitted] pair and one or two b-tagged jets. The cross-sections are measured in a fiducial region corresponding to the detector acceptance for leptons, and are compared to the predictions from a variety of Monte Carlo event generators, as well as fixed-order QCD calculations, exploring the sensitivity of the cross-sections to the gluon parton distribution function. Some of the distributions are also sensitive to the top quark pole mass; a combined fit of NLO fixed-order predictions to all the measured distributions yields a top quark mass value of [Formula omitted] GeV, where the three uncertainties arise from data statistics, experimental systematics, and theoretical sources.
  • Editor: Springer
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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