Preliminary results on the measurement of the top quark mass at
the Tevatron Collider are presented. In the dilepton decay channel, the CDF
Collaboration measures m_t = 175.0^+17.4_-16.9(stat.) +/- 8.4(syst.)
GeV/c^2, using a sample of ~126 pb^-1 of proton-antiproton collision data at
sqrt s = 1.96 TeV (Run II). In the lepton plus jets channel, the CDF
Collaboration measures 177.5^+12.7_-9.4(stat.) +/- 7.1(syst.) GeV/c^2, using
a sample of ~102 pb^-1 at sqrt s = 1.96 TeV. The D0 Collaboration has newly
applied a likelihood technique to improve the analysis of ~125 pb^-1 of
proton-antiproton collisions at sqrt s = 1.8 TeV (Run I), with the result:
m_t = 180.1 +/- 3.6(stat.) +/- 3.9(syst.) GeV/c^2. The latter is combined
with all the measurements based on the data collected in Run I to yield the
most recent and comprehensive experimental determination of the top quark
mass: m_t = 178.0 +/- 2.7(stat.) +/- 3.3 (syst.) GeV/c^2.
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Updated: Tuesday, 2004 July 13 09:55:55 CDT automatically from input from "Carol I. Picciolo"