Precision measurement of the top-quark mass in lepton+jets final states

Understand

We measure the mass of the top quark in lepton+jets final states using the full sample of $p\bar{p}$ collision data collected by the D0 experiment in Run~II of the Fermilab Tevatron Collider at $\sqrt s=1.96~$TeV, corresponding to $9.7~{\rm fb}^{-1}$ of integrated luminosity.

• We use a matrix element technique that calculates the probabilities for each event to result from $t\bar t$ production or background.
• The overall jet energy scale is constrained in situ by the mass of the $W$ boson.
• We measure $m_t=174.98\pm0.76~{\rm GeV}$.