Precise measurement of the top-quark mass fromlepton+jetsevents at D0

We report a measurement of the mass of the top quark in $\mathrm{\text{lepton}}+\mathrm{\text{jets}}$ final states of $p\overline{p}\to t\overline{t}$ data corresponding to $2.6{\mathrm{fb}}^{-1}$ of integrated luminosity collected by the D0 experiment at the Fermilab Tevatron Collider. A matrix-element method is developed that combines an in situ jet energy calibration with our standard jet energy scale derived from studies of $\gamma +\mathrm{\text{jet}}$ and dijet events. We then implement a flavor-dependent jet-response correction through a novel approach. This method is used to measure a top-quark mass of $m_t=176.01\pm 1.64\mathrm{GeV}$. Combining this result with our previous result obtained on an independent data set, we measure a top-quark mass of $m_t=174.94\pm 1.49\mathrm{GeV}$ for a total integrated luminosity of $3.6{\mathrm{fb}}^{-1}$.