Precision Top-Quark Mass Measurement in the Lepton+ Jets Topology in pp [over¯] Collisions at sqrt [s]= 1.96 TeV (original) (raw)

We report two measurements of the top-quark mass Mtop using the CDF II detector at the Fermilab Tevatron in a 318 pbÿ1 data sample of tt events in the lepton jets final state. One method uses an eventbased likelihood technique resulting in Mtop 173: 2 2: 6 ÿ2: 4 stat 3: 2 syst GeV= c2 or 173: 2 4: 1 ÿ4: 0 GeV= c2. The second method reconstructs a top-quark mass in each event using the measured invariant mass of the hadronically decaying W boson to constrain the jet energy scale to obtain a value for Mtop of 173: 5 3: 7 ÿ3: 6 stat 1: ...