Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/48909
Título: | Measurement of lepton differential distributions and the top quark mass in tt¯ production in pp collisions at s√=8 TeV with the ATLAS detector |
Autor(es): | Onofre, A. Castro, Nuno Filipe Silva Fernandes ATLAS Collaboration |
Data: | 2017 |
Editora: | Springer Verlag |
Revista: | European Physical Journal C: Particles and Fields |
Citação: | Aaboud, M., Aad, G., Abbott, B., Abdinov, O., Abeloos, B., Abidi, S. H., . . . Collaboration, A. (2017). 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]. European Physical Journal C, 77(11). doi: 10.1140/epjc/s10052-017-5349-9 |
Resumo(s): | 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 mpolet=173.2±0.9±0.8±1.2 GeV, where the three uncertainties arise from data statistics, experimental systematics, and theoretical sources. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/48909 |
DOI: | 10.1140/epjc/s10052-017-5349-9 |
ISSN: | 1434-6044 |
e-ISSN: | 1434-6052 |
Versão da editora: | https://link.springer.com/article/10.1140%2Fepjc%2Fs10052-017-5349-9 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | LIP - Artigos/papers |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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10.1140_epjc_s10052-017-5349-9.pdf | 3,14 MB | Adobe PDF | Ver/Abrir |