Top quark mass in topologies enhanced with single top quarks produced in the t-channel at $\mathbf{\sqrt{s}=8\,TeV}$ with ATLAS

This poster presents a measurement of the top quark mass in topologies enhanced with single top quark decays in the $t$-channel produced via weak interactions. The dataset was collected at a centre-of-mass energy of $\sqrt{s}=8\,\mathrm{TeV}$ with the ATLAS detector at the LHC and corresponds to an integrated luminosity of $20.3\,\mathrm{fb^{-1}}$. Selected events contain one lepton, missing transverse momentum, and two jets, one of which is $b$-tagged. The top quark processes are further enhanced using a neural network-based discriminant. To determine the top quark mass a template method is used in combination with the invariant mass of the lepton and the $b$-tagged jet as estimator. The top quark mass is measured as $m_{\mathrm{top}} = 172.2 \pm 0.7_{\mathrm{stat.}} \pm 2.0_{\mathrm{syst.}}\,\mathrm{GeV}$.