Measurement of the Top Quark Mass in the Lepton+Jets Channel Using the Lepton Transverse Momentum

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This letter reports a measurement of the top quark mass, M_{top}, in data from p-pbar collisions at sqrt{s} = 1.96 TeV corresponding to 2.7 fb^{-1} of integrated luminosity at the Fermilab Tevatron using the CDF II detector.

• Events with the lepton+jets topology are selected.
• An unbinned likelihood is constructed based on the dependence of the lepton transverse momentum, P_T, on M_{top}.
• A maximum likelihood fit to the data yields a measured mass M_{top} = (176.9 +/- 8.0 stat +/- 2.7 syst) GeV/c^2.