We present a precision measurement of the top-quark mass
using the full sample of Tevatron √s=1.96 TeV proton-antiproton
collisions collected by the CDF II detector, corresponding to an
integrated luminosity of 8.7 fb-1. Using a sample of tt̅ candidate
events decaying into the lepton+jets channel, we obtain distributions of
the top-quark masses and the invariant mass of two jets from the W boson
decays from data. We then compare these distributions to templates derived
from signal and background samples to extract the top-quark mass and
the energy scale of the calorimeter jets with in situ calibration. The
likelihood fit of the templates from signal and background events to the
data yields the single most-precise measurement of the top-quark mass,
Mtop=172.85±0.71(stat)±0.85(syst) GeV/c2.
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Updated: Thursday, 2012 October 18 09:57:51 CDT automatically from input from Stephanie A Schuler