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

Abstract

We present a new measurement of the top quark mass in $t\bar{t}$ events in which both $W$ bosons from top quarks decay into lepton ($e\nu ,\mu \nu$). We use events collected by the CDF experiment from $p\bar{p}$ collisions at \sqrt s=1.8 TeV at the Tevatron collider. We measure a top quark mass of 167.4 \pm 10.3(stat) \pm 4.8(syst) GeV/c^2 from a sample of eight events. We combine this result with previous CDF measurements in other decay channels to obtain a mass value of 176.0 \pm 6.5 GeV/c^2.

arXiv comment16 pages, 2 figures. Submitted to PRL

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