Top-Quark Mass Measurement Using Events with Missing Transverse Energy and Jets at CDF

We present a measurement of the top-quark mass using a sample of $t\overline{t}$ events in $5.7\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ of integrated luminosity from $p\overline{p}$ collisions at the Fermilab Tevatron with $\sqrt{s}=1.96\text{ }\text{ }\mathrm{TeV}$ and collected by the CDF II Detector. We select events having large missing transverse energy, and four, five, or six jets with at least one jet tagged as coming from a $b$ quark, and reject events with identified charged leptons. This analysis considers events from the semileptonic $t\overline{t}$ decay channel, including events that contain tau leptons. The measurement is based on a multidimensional template method. We fit the data to signal templates of varying top-quark masses and background templates, and measure a top-quark mass of ${\mathrm{M}}_{\mathrm{top}}=172.32\ifmmode\pm\else\textpm\fi{}2.4(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}1.0(\mathrm{syst})\text{ }\text{ }\mathrm{GeV}/{c}^{2}$.

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