Measurement of the top quark mass in thelepton+jetsfinal state with the matrix element method

We present a measurement of the top quark mass with the matrix element method in the $\mathrm{\text{lepton}}+\mathrm{\text{jets}}$ final state. As the energy scale for calorimeter jets represents the dominant source of systematic uncertainty, the matrix element likelihood is extended by an additional parameter, which is defined as a global multiplicative factor applied to the standard energy scale. The top quark mass is obtained from a fit that yields the combined statistical and systematic jet energy scale uncertainty. Using a data set of $0.4{\mathrm{fb}}^{-1}$ taken with the D0 experiment at Run II of the Fermilab Tevatron Collider, the mass of the top quark is measured using topological information to be: $m_{\mathrm{top}}^{\ell +\mathrm{jets}}(\mathrm{topo})={169.2}_{-7.4}^{+5.0}(\mathrm{stat}+JES{)}_{-1.4}^{+1.5}(\mathrm{syst})\mathrm{GeV}$, and when information about identified $b$ jets is included: $m_{\mathrm{top}}^{\ell +\mathrm{jets}}(b\mathrm{\text{-tag}})={170.3}_{-4.5}^{+4.1}(\mathrm{stat}+JES{)}_{-1.8}^{+1.2}(\mathrm{syst})\mathrm{GeV}$. The measurements yield a jet energy scale consistent with the reference scale.