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Simultaneous measurements of $t\bar{t}$, $WW$ and $Z/\gamma^*\to \tau^+\tau^-$ production at $\sqrt{s}=7$ TeV with the ATLAS detector

A global test of these Standard Model predictions is presented through the study of the common final state made up of a pair of an oppositely charged electron and muon in proton-proton collisions at sqrt(s) = 7 TeV recorded by the ATLAS detector at the LHC. The simultaneous measurement of the cross-...

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Detalles Bibliográficos
Autores principales: Bangert, A, Benjamin, D, Ferrando, J, Finelli, K, Kruse, M, Limosani, A, Lisovyi, M, Patel, N, Saavedra, A, Suster, C, Varvell, K
Lenguaje:eng
Publicado: 2014
Materias:
Acceso en línea:http://cds.cern.ch/record/1745678
Descripción
Sumario:A global test of these Standard Model predictions is presented through the study of the common final state made up of a pair of an oppositely charged electron and muon in proton-proton collisions at sqrt(s) = 7 TeV recorded by the ATLAS detector at the LHC. The simultaneous measurement of the cross-sections of the pair production of top quarks, tau-leptons via Drell-Yan, and WW bosons is performed. The simultaneous extraction of the cross-sections is performed in a two-dimensional phase space spanned by missing transverse momentum and jet multiplicity. This analysis allows for a broader test of the Standard Model than that given by dedicated cross-section measurements providing the underlying correlations in the predicted and measured cross-sections due to common proton parton distribution functions parameters. This measurement can help to improve predictions of interaction cross-sections in hadron collisions.