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  • Aaboud, MMohamed Premier University (author)

Measurement of lepton differential distributions and the top quark mass in tt¯ production in pp collisions at √s=8 TeV with the ATLAS detector

  • Article/chapterEnglish2017

Publisher, publication year, extent ...

  • 2017-11-25
  • Springer Science and Business Media LLC,2017

Numbers

  • LIBRIS-ID:oai:lup.lub.lu.se:cb71764e-aeda-4f8a-b4da-870354874b37
  • https://lup.lub.lu.se/record/cb71764e-aeda-4f8a-b4da-870354874b37URI
  • https://doi.org/10.1140/epjc/s10052-017-5349-9DOI
  • https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-344309URI

Supplementary language notes

  • Language:English
  • Summary in:English

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Classification

  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

Notes

  • ATLAS Collaboration, for complete list of authors see http://dx.doi.org/10.1140/epjc/s10052-017-5349-9
  • This paper presents single lepton and dilepton kinematic distributions measured in dileptonic tt¯ events produced in 20.2fb - 1 of s=8 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 eμ 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 mtpole=173.2±0.9±0.8±1.2 GeV, where the three uncertainties arise from data statistics, experimental systematics, and theoretical sources. © 2017, CERN for the benefit of the ATLAS collaboration.

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  • Mohamed Premier UniversityAix-Marseille University (creator_code:org_t)
  • ATLAS Collaboration

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  • In:European Physical Journal C: Springer Science and Business Media LLC77:111434-60441434-6052

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