Precise Measurement of the Top-Quark Mass fromlepton+jetsEvents

We measure the mass of the top quark using top-quark pair candidate events in the $\mathrm{\text{lepton}}+\mathrm{\text{jets}}$ channel from data corresponding to $1{\mathrm{fb}}^{-1}$ of integrated luminosity collected by the D0 experiment at the Fermilab Tevatron collider. We use a likelihood technique that reduces the jet energy scale uncertainty by combining an in situ jet energy calibration with the independent constraint on the jet energy scale (JES) from the calibration derived using $\mathrm{\text{photon}}+\mathrm{\text{jets}}$ and dijet samples. We find the mass of the top quark to be $171.5\pm 1.8(\mathrm{stat}.+\mathrm{JES})\pm 1.1(\mathrm{syst}.)\mathrm{GeV}$.