We establish the existence of the top quark using a 67 pb-1 data sample of p̄p collisions at s = 1.8 TeV collected with the Collider Detector at Fermilab (CDF). Employing techniques similar to those we previously published, we observe a signal consistent with tt̄ decay to WWbb̄, 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 tt̄ production cross section to be 6.8+3.6-2.4 pb.
Physical Review Letters
- Pub Date:
- April 1995
- High Energy Physics - Experiment;
- High Energy Physics - Phenomenology
- The file below is a Latex file and is 17 pages long including figures. The link to the CDF Page containing this document is http://www-cdf.fnal.gov/top_status/top.html