A first measurement of the top quark mass in the decay channel t → (W → ℓν) (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-of-mass energy of 8 TeV. The data correspond to an integrated luminosity of 19.7 fb−1, with 666 tt¯ 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 + ℓ) system, where ℓ 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.
(2016). Measurement of the mass of the top quark in decays with a J/ψ meson in pp collisions at 8 TeV [journal article - articolo]. In JOURNAL OF HIGH ENERGY PHYSICS. Retrieved from http://hdl.handle.net/10446/143436
Measurement of the mass of the top quark in decays with a J/ψ meson in pp collisions at 8 TeV
Re, V.;Vai, I.;
2016-01-01
Abstract
A first measurement of the top quark mass in the decay channel t → (W → ℓν) (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-of-mass energy of 8 TeV. The data correspond to an integrated luminosity of 19.7 fb−1, with 666 tt¯ 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 + ℓ) system, where ℓ 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.File | Dimensione del file | Formato | |
---|---|---|---|
Khachatryan2016_Article_MeasurementOfTheMassOfTheTopQu.pdf
accesso aperto
Versione:
publisher's version - versione editoriale
Licenza:
Creative commons
Dimensione del file
869.94 kB
Formato
Adobe PDF
|
869.94 kB | Adobe PDF | Visualizza/Apri |
Pubblicazioni consigliate
Aisberg ©2008 Servizi bibliotecari, Università degli studi di Bergamo | Terms of use/Condizioni di utilizzo