Measurements of the top quark mass with the ATLAS detector

The measurements of the top quark mass given are obtained from ATLAS data taken at proton–proton centre-of-mass energies of $\sqrt{s}=7$ and $8$ TeV. An extraction of the top quark pole mass ($m_{\mathrm{t}\mathrm{o}\mathrm{p}}^{\mathrm{p}\mathrm{o}\mathrm{l}\mathrm{e}}$) at next-to-leading order (NLO) is presented. This result is obtained from normalised differential cross-sections in the $t\bar{t}\text{todilepton}$ channel leading to: $m_{$\mathrm{t}\mathrm{o}\mathrm{p}$}^{$\mathrm{p}\mathrm{o}\mathrm{l}\mathrm{e}$} = 173.2 \pm 0.9 ($\mathrm{s}\mathrm{t}\mathrm{a}\mathrm{t}\mathrm{.}$) \pm 0.8 ($\mathrm{s}\mathrm{y}\mathrm{s}\mathrm{t}\mathrm{.}$) \pm 1.2 ($\mathrm{t}\mathrm{h}\mathrm{e}\mathrm{o}\mathrm{.}$)$ GeV. In addition, measurements of $m_{\mathrm{t}\mathrm{o}\mathrm{p}}$ are discussed that are based on the template method performed in three $t\bar{t}$ decay channels. For all results the uncertainty is dominated by systematic effects. Finally, the 2016 ATLAS combined value of $m_{\mathrm{t}\mathrm{o}\mathrm{p}}$ is: $m_{$\mathrm{t}\mathrm{o}\mathrm{p}$}=172.84 \pm 0.34 ($\mathrm{s}\mathrm{t}\mathrm{a}\mathrm{t}\mathrm{.}$) \pm 0.61 ($\mathrm{s}\mathrm{y}\mathrm{s}\mathrm{t}\mathrm{.}$)$ GeV,with a total uncertainty of 0.70 GeV, i.e. a precision of 0.4$\mathrm{\%}$.