Precise measurement of the top quark mass in the lepton+jets topology at CDF II

Journal Article (Academic article)

We present a measurement of the mass of the top quark from proton-antiproton collisions recorded at the CDF experiment in Run II of the Fermilab Tevatron. We analyze events from the single lepton plus jets final state (t[overline t]-->W+bW-[overline b]-->lnubq[overline q][prime][overline b]). The top-quark mass is extracted using a direct calculation of the probability density that each event corresponds to the t[overline t] final state. The probability is a function of both the mass of the top quark and the energy scale of the calorimeter jets, which is constrained in situ by the hadronic W boson mass. Using 167 events observed in 955 pb-1 of integrated luminosity, we achieve the single most precise measurement of the top-quark mass, 170.8$\pm$2.2(stat.)$\pm$1.4(syst.) GeV/c2.

Full Text

Duke Authors

Cited Authors

  • Abulencia, ; A, ; others,

Published Date

  • 2007

Published In

  • Phys. Rev. Lett.

Volume / Issue

  • 99 /

Start / End Page

  • 182002 -

PubMed ID

  • 17995397