Published April 1, 1995 | Version v1
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Observation of Top Quark Production in p ¯ p Collisions with the Collider Detector at Fermilab

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We establish the existence of the top quark using a 67pb−1 data sample of p¯p collisions at s=1.8TeV collected with the Collider Detector at Fermilab (CDF). Employing techniques similar to those we previously published, we observe a signal consistent with tt¯ decay to WWbb¯, but inconsistent with the background prediction by 4.8σ. Additional evidence for the top quark is provided by a peak in the reconstructed mass distribution. We measure the top quark mass to be 176±8(stat)±10(syst)GeV/c2, and the tt¯ production cross section to be 6.8−2.4+3.6pb., This article appears in the following collection:

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