Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/75359
Título: | Measurement of the top-quark mass in tt¯ + 1-jet events collected with the ATLAS detector in pp collisions at √s = 8 TeV |
Autor(es): | Onofre, A. Castro, Nuno Filipe ATLAS Collaboration |
Palavras-chave: | Hadron-Hadron scattering (experiments) Top physics |
Data: | 2019 |
Editora: | Springer |
Revista: | Journal of High Energy Physics |
Citação: | The ATLAS collaboration., Aad, G., Abbott, B. et al. Measurement of the top-quark mass in tt¯ + 1-jet events collected with the ATLAS detector in pp collisions at s√ = 8 TeV. J. High Energ. Phys. 2019, 150 (2019). https://doi.org/10.1007/JHEP11(2019)150 |
Resumo(s): | A determination of the top-quark mass is presented using 20.2 fb−1 of 8 TeV proton-proton collision data produced by the Large Hadron Collider and collected by the ATLAS experiment. The normalised differential cross section of top-quark pair production in association with an energetic jet is measured in the lepton+jets final state and unfolded to parton and particle levels. The unfolded distribution at parton level can be described using next-to-leading-order QCD predictions in terms of either the top-quark pole mass or the running mass as defined in the (modified) minimal subtraction scheme. A comparison between the experimental distribution and the theoretical prediction allows the top-quark mass to be extracted in the two schemes. The value obtained for the pole-mass scheme is: mtpole=171.1±0.4(stat)±0.9(syst)−0.3+0.7(theo)GeV The extracted value in the running-mass scheme is: mt(mt)=162.9±0.5(stat)±1.0(syst)−1.2+2.1(theo)GeV. The results for the top-quark mass using the two schemes are consistent, when translated from one scheme to the other. [Figure not available: see fulltext.] |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/75359 |
DOI: | 10.1007/JHEP11(2019)150 |
ISSN: | 1029-8479 |
Versão da editora: | https://link.springer.com/article/10.1007%2FJHEP11%282019%29150 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | LIP - Artigos/papers |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Aad2019_Article_MeasurementOfTheTop-quarkMassI.pdf | 720,42 kB | Adobe PDF | Ver/Abrir |