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

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

2011-01-25

arxiv.org/abs/1101.4926v2

Phys.Lett.B698:371-379,2011

Physics

High Energy Physics

High Energy Physics - Experiment

submitted to Phys. Lett. B

Scientific paper

10.1016/j.physletb.2011.03.041

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. In this measurement, the contribution by the jet energy scale uncertainty to the systematic error is negligible. The result provides an important consistency test for other M_{top} measurements where explicit use of the jet energy is made for deriving the top quark mass.

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