Measurement of the mass of the top quark in decays with a $J/ψ$ meson in pp collisions at 8 TeV
Journal
Journal of High Energy Physics
Journal Volume
12
Pages
123
Date Issued
2016
Author(s)
Abstract
A first measurement of the top quark mass in the decay channel t (W )(b J/ + X + -+ 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/ candidate decaying into an oppositely-charged muon pair. The mass of the (J/ + ) 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.
SDGs
Type
journal article