Measurement of the Top Quark Mass with the Collider Detector at Fermilab

Abstract

This report describes a measurement of the top quark mass in $\ppbar$ collisions at a center of mass energy of 1.8 TeV. The data sample was collected with the CDF detector during the 1992--95 collider run at the Fermilab Tevatron, and corresponds to an integrated luminosity of 106 \pb. Candidate $t\bar{t}$ events in the ``lepton+jets'' decay channel provide our most precise measurement of the top quark mass. For each event a top mass is determined by using energy and momentum constraints on the production of the $\ttbar$ pair and its subsequent decay. A likelihood fit to the distribution of reconstructed masses in the data sample gives a top mass in the lepton+jets channel of $176.1\pm 5.1 (stat.)\pm 5.3 (syst.) \gevcc$. Combining this result with measurements from the ``all-hadronic'' and ``dilepton'' decay topologies yields a top mass of $176.1\pm 6.6 \gevcc$.

158 pages, 41 figures

References in corpus (3)

• Measurement of the Top Quark Mass with the Collider Detector at Fermilab
• Spin Correlation in tt-bar Production from pp-bar Collisions at sqrt(s)=1.8 TeV
• Measurement of the Top Quark Pair Production Cross Section in the All-jets Decay Channel

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