We present a measurement of the top-quark mass in p anti-p
collisions at s**(1/2) = 1.96 TeV which uses events with an inclusive
signature of missing transverse energy and jets. The event selection is
sensitive to t anti-t --> W+bW-b-bar --> l nu bqq' b-bar independent of the
lepton flavor, and results in a large acceptance for W --> tau nu decays.
All-hadronic tt-bar 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 pb-1 of integrated luminosity recorded by the Collider
Detector at Fermilab, we measure a top-quark mass m_t =
172.3+10.8_-9.6(stat.) +/- 10.8(syst.) GeV/c2. 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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Updated: Friday, 2007 July 13 11:04:43 CDT automatically from input from Carol Picciolo