Measurement of the top-quark mass using missing<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>E</mml:mi><mml:mi>T</mml:mi></mml:msub><mml:mo>+</mml:mo><mml:mtext mathvariant="normal">jets</mml:mtext></mml:math>events with secondary vertex<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>b</mml:mi></mml:math>-tagging at CDF II

We present a measurement of the top-quark mass in $p\overline{p}$ collisions at $\sqrt{s}=1.96\text{ }\text{ }\mathrm{TeV}$ which uses events with an inclusive signature of missing transverse energy and jets. The event selection is sensitive to $t\overline{t}\ensuremath{\rightarrow}{W}^{+}b{W}^{\ensuremath{-}}\overline{b}\ensuremath{\rightarrow}l\ensuremath{\nu}bq{q}^{\ensuremath{'}}\overline{b}$ independent of the lepton flavor and results in a large acceptance for $W\ensuremath{\rightarrow}\ensuremath{\tau}\ensuremath{\nu}$ decays. All-hadronic $t\overline{t}$ decays and events with identified electrons or muons are vetoed to provide a statistically independent sample with respect to all previous measurements. The top-quark mass is inferred from the distribution of the scalar sum of all jet transverse energies and the missing transverse energy. Using $311\text{ }\text{ }{\mathrm{pb}}^{\ensuremath{-}1}$ of integrated luminosity recorded by the Collider Detector at Fermilab, we measure a top-quark mass ${m}_{t}={172.3}_{\ensuremath{-}9.6}^{+10.8}(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}10.8(\mathrm{syst})\text{ }\text{ }\mathrm{GeV}/{c}^{2}$. While the uncertainty on ${m}_{t}$ is larger than that of other measurements, the result is statistically uncorrelated with those of other methods and thus can help to reduce the overall ${m}_{t}$ uncertainty when combined with other existing measurements.

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