Measurement of the mass of the top quark in decays with a J/ψ meson in pp collisions at 8 TeV

V. Khachatryan , Adrian Byszuk , Agnieszka Zagoździńska


A first measurement of the top quark mass in the decay channel t → (W → `ν)(b → J/ψ + X → µ +µ − + X) is presented. The analysis uses events selected from the proton-proton collisions recorded by the CMS detector at the LHC at a center-ofmass energy of 8 TeV. The data correspond to an integrated luminosity of 19.7 fb−1 , with 666 t¯t and single top quark candidate events containing a reconstructed J/ψ candidate decaying into an oppositely-charged muon pair. The mass of the (J/ψ + `) system, where ` is an electron or a muon from W boson decay, is used to extract a top quark mass of 173.5 ± 3.0 (stat) ± 0.9 (syst) GeV.
Collective authorCMS Collaboration
Author V. Khachatryan
V. Khachatryan,,
, Adrian Byszuk (FEIT / PE)
Adrian Byszuk,,
- The Institute of Electronic Systems
, Agnieszka Zagoździńska (FEIT / PE)
Agnieszka Zagoździńska,,
- The Institute of Electronic Systems
Total number of authors2263
Journal seriesJournal of High Energy Physics, ISSN 1029-8479, [1126-6708]
Issue year2016
Publication size in sheets1.9
Keywords in EnglishHadron-Hadron scattering (experiments), Top physics
Languageen angielski
Score (nominal)40
ScoreMinisterial score = 40.0, 06-04-2017, ArticleFromJournal
Ministerial score (2013-2016) = 40.0, 06-04-2017, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 6.063 (2) - 2016=4.992 (5)
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