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Phys. Rev. Lett. 79, 1992–1997 (1997)

First Observation of the All-Hadronic Decay of tt̅ Pairs

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F. Abe et al. (CDF Collaboration)
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Received 25 March 1997; published in the issue dated 15 September 1997

We present the first observation of the all hadronic decay of tt̅ pairs. The analysis is performed using 109pb-1 of pp̅ collisions at s = 1.8TeV collected with the Collider Detector at Fermilab. We observe an excess of events with five or more jets, including one or two b jets, relative to background expectations. Based on this excess we evaluate the production cross section to be in agreement with previous results. We measure the top mass to be 186±10±12GeV/c2.

© 1997 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.79.1992
DOI:
10.1103/PhysRevLett.79.1992
PACS:
14.65.Ha, 13.30.Eg, 13.85.Ni