Measurement of the top-quark mass using decays with a $J/\ddot{I}ˆ$ 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 $J/\ddot{I}ˆ$ meson reconstructed in its $\hat{I}{¼}^{+}\hat{I}{¼}^{-}$ decay mode. The data sample was recorded with th…