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Scientific article
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English

Precision Top-Quark Mass Measurement in the Lepton + Jets Topology in pp Collisions at s√=1.96  TeV

ContributorsCDF Collaboration
Published inPhysical review letters, vol. 96, no. 02, 022004
Publication date2006
Abstract

We report two measurements of the top-quark mass Mtop using the CDF II detector at the Fermilab Tevatron in a 318  pb−1 data sample of tt¯ events in the lepton+jets final state. One method uses an event-based likelihood technique resulting in Mtop=173.2+2.6−2.4(stat)±3.2(syst)  GeV/c2 or 173.2+4.1−4.0  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+3.7−3.6(stat)±1.3(syst)  GeV/c2 or 173.5+3.9−3.8  GeV/c2. We take the latter, which is more precise, as our result.

Citation (ISO format)
CDF Collaboration. Precision Top-Quark Mass Measurement in the Lepton + Jets Topology in <em>pp</em> Collisions at s√=1.96  TeV. In: Physical review letters, 2006, vol. 96, n° 02, p. 022004. doi: 10.1103/PhysRevLett.96.022004
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ISSN of the journal0031-9007
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