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.
articolo
14-dic-2016
2016
Inglese
online
2016
12 (art. 123)
1
39
Settore FIS/01 - Fisica Sperimentale
Hadron-Hadron scattering (experiments); Top physics; Nuclear and High Energy Physics; Proton–proton collisions
abstract consultabile alla pagina https://link.springer.com/article/10.1007/JHEP12(2016)123
Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Brondolin, E.; Dragicevic, M.; Erö, J.; Flechl, ...espandi
info:eu-repo/semantics/article
open
(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
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