Measurement of the top-quark mass using decays with a $J/\psi$ meson at $\sqrt{s}=$13 TeV with the ATLAS detector

ATLAS Collaboration

The top-quark mass is measured using top-quark decays producing an isolated lepton and $J/\psi$ meson reconstructed in its ${\mu }^{+}{\mu }^{-}$ decay mode. The data sample was recorded with the A…