Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/48842
Título: | Measurement of the charge asymmetry in top quark pair production in pp collisions at root s=7 TeV using the ATLAS detector |
Autor(es): | Onofre, A. Castro, Nuno Filipe Silva Fernandes ATLAS Collaboration |
Data: | 2012 |
Editora: | Springer Verlag |
Revista: | European Physical Journal C: Particles and Fields |
Citação: | Aad, G., Abbott, B., Abdallah, J., Abdelalim, A. A., Abdesselam, A., Abdinov, O., . . . Collaboration, A. (2012). Measurement of the charge asymmetry in top quark pair production in pp collisions at root s=7 TeV using the ATLAS detector. European Physical Journal C, 72(6). doi: 10.1140/epjc/s10052-012-2039-5 |
Resumo(s): | A measurement of the top-antitop production charge asymmetry AC is presented using data corresponding to an integrated luminosity of 1.04 fb−1 of pp collisions at √s=7 TeV collected by the ATLAS detector at the LHC. Events are selected with a single lepton (electron or muon), missing transverse momentum and at least four jets of which at least one jet is identified as coming from a b-quark. A kinematic fit is used to reconstruct the tˉt event topology. After background subtraction, a Bayesian unfolding procedure is performed to correct for acceptance and detector effects. The measured value of AC is AC=−0.019±0.028 (stat.)±0.024 (syst.), consistent with the prediction from the MC@NLO Monte Carlo generator of AC=0.006±0.002. Measurements of AC in two ranges of invariant mass of the top-antitop pair are also shown. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/48842 |
DOI: | 10.1140/epjc/s10052-012-2039-5 |
ISSN: | 1434-6044 |
e-ISSN: | 1434-6052 |
Versão da editora: | http://link.springer.com/article/10.1140%2Fepjc%2Fs10052-012-2039-5 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | LIP - Artigos/papers |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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art_3A10.1140_2Fepjc_2Fs10052-012-2039-5.pdf | 1,7 MB | Adobe PDF | Ver/Abrir |