Measurement of the top-quark mass using missing $E_T$+jets events with secondary vertex $b$-tagging at CDF II

Abstract

We present a measurement of the top-quark mass in $p\bar{p}$ collisions at \hbox{$\sqrt{s}=1.96$} TeV which uses events with an inclusive signature of missing transverse energy and jets. % The event selection is sensitive to $t\bar{t}\to W^{+}b{W}^{-}\bar{b}\to l\nu bq{q}^{\prime }\bar{b}$ independent of the lepton flavor, and results in a large acceptance for $W\to \tau \nu$ decays. % All-hadronic $t\bar{t}$ decays and events with identified electrons or muons are vetoed to provide a statistically independent sample with respect to all previous measurements. % The top-quark mass is inferred from the distribution of the scalar sum of all jet transverse energies and the missing transverse energy. Using 311 pb${}^{-1}$ of integrated luminosity recorded by the Collider Detector at Fermilab, we measure a top-quark mass $m_t=172.3_{-9.6}^{+10.8}$(stat.)$\pm 10.8$(syst.) GeV/$c^2$. While the uncertainty on $m_t$ is larger than that of other measurements, the result is statistically uncorrelated with those of other methods, and thus can help to reduce the overall $m_t$ uncertainty when combined with other existing measurements.

8 pages, 4 figures

References in corpus (5)

• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• The Cosmological Parameters 2006
• Top Quark Mass Measurement from Dilepton Events at CDF II
• Measurement of the Top-Quark Mass in All-Hadronic Decays in p pbar Collisions at CDF II
• Measurement of the t anti-t Production Cross Section in p anti-p Collisions at s**(1/2) = 1.96 TeV using Missing E(t) + jets Events with Secondary Vertex b-Tagging

Cited by in corpus (3)

• Review of Properties of the Top Quark from Measurements at the Tevatron
• Precision measurements of the top quark mass from the Tevatron in the pre-LHC era
• Top-quark mass measurement using events with missing transverse energy and jets at CDF