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Measurement of the top-quark mass in ttˉ events with lepton+jets final states in pp collisions at s√=7 TeV

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CMS Collaboration [--] Quertenmont, Loic [UCL] Basegmez, Suzan [UCL] Bruno, Giacomo [UCL] Castello, Roberto [UCL] Ceard, Ludivine [UCL] Delaere, Christophe [UCL] Du Pree, Tristan [UCL] Favart, Denis [UCL] Forthomme, Laurent [UCL] Giammanco, Andrea [UCL] Hollar, Jonathan [UCL] Lemaitre, Vincent [UCL] Liao, Junhui [UCL] Militaru, Otilia [UCL] Nuttens, Claude [UCL] Pagano, Davide [UCL] Pin, Arnaud [UCL] Piotrzkowski, Krzysztof [UCL] Schul, Nicolas [UCL] Vizan Garcia, Jesús Manuel [UCL]

The mass of the top quark is measured using a sample of TeX candidate events with one electron or muon and at least four jets in the final state, collected by CMS in pp collisions at TeX TeV at the LHC. A total of 5174 candidate events is selected from data corresponding to an integrated luminosity of 5.0 fb−1. For each event the mass is reconstructed from a kinematic fit of the decay products to a TeX hypothesis. The top-quark mass is determined simultaneously with the jet energy scale (JES), constrained by the known mass of the W boson in TeX decays, to be 173.49 ± 0.43 (stat. + JES) ±0.98 (syst.) GeV.

Document type Article de périodique (Journal article) – Article de recherche
Access type Accès libre
Publication date 2012
Language Anglais
Journal information "Journal of High Energy Physics" - Vol. 1212, no. --, p. 105 (2012)
Peer reviewed yes
Publisher Springer-Verlag
e-issn 1029-8479
Publication status Publié
Affiliation UCL - SST/IRMP - Institut de recherche en mathématique et physique
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Bibliographic reference CMS Collaboration ; Quertenmont, Loic ; Basegmez, Suzan ; Bruno, Giacomo ; Castello, Roberto ; et. al. Measurement of the top-quark mass in ttˉ events with lepton+jets final states in pp collisions at s√=7 TeV. In: Journal of High Energy Physics, Vol. 1212, no. --, p. 105 (2012)
Permanent URL http://hdl.handle.net/2078.1/131565