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Measurement of the inclusive and fiducial [Formula omitted] production cross-sections in the lepton+jets channel in pp collisions at [Formula omitted] 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, 2018-06, Vol.78 (6) [Periódico revisado por pares]

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Título:
Measurement of the inclusive and fiducial [Formula omitted] production cross-sections in the lepton+jets channel in pp collisions at [Formula omitted] with the ATLAS detector
Autor: Aaboud, M ; Aad, G ; Abbott, B ; Abdinov, O ; Abeloos, B ; Abidi, S. H ; AbouZeid, O. S
É parte de: The European physical journal. C, Particles and fields, 2018-06, Vol.78 (6)
Descrição: The inclusive and fiducial [Formula omitted] production cross-sections are measured in the lepton+jets channel using [Formula omitted] of proton-proton collision data at a centre-of-mass energy of 8 TeV recorded with the ATLAS detector at the LHC. Major systematic uncertainties due to the modelling of the jet energy scale and b-tagging efficiency are constrained by separating selected events into three disjoint regions. In order to reduce systematic uncertainties in the most important background, the [Formula omitted] process is modelled using [Formula omitted]+ jets events in a data-driven approach. The inclusive [Formula omitted] cross-section is measured with a precision of 5.7% to be [Formula omitted], assuming a top-quark mass of 172.5 GeV. The result is in agreement with the Standard Model prediction. The cross-section is also measured in a phase space close to that of the selected data. The fiducial cross-section is [Formula omitted] with a precision of 4.5%.
Editor: Springer
Idioma: Inglês

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