Chronology of Milestone Events in Particle Physics - ABE 1995
Chronology of Milestone Events in Particle Physics

ABE 1995

CDF collaboration; Abe, F. et al.
Observation of Top Quark Production in p Collisions
Phys. Rev. Lett. 74 (1995) 2626;

Abstracts
We establish the existence of the top quark using a 67 pb-1 data sample of p collisions at = 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 t decay to WWb, but inconsistent with the background prediction by 4.8. 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 t production cross section to be 6.8+3.6-2.4 pb.

Accelerator FNAL-COLLIDER Detectors CDF

Related references
More (earlier) information appears in
F. Abe et al., Phys. Rev. D50 (1994) 2966;
F. Abe et al., Phys. Rev. Lett. 73 (1994) 225;
See also
F. Abe et al., preprint HEP-EX-9412009 (1994);
S. Abachi et al., Phys. Rev. Lett. 72 (1994) 2138;

Reactions
  p + e 2jet X 1.8 TeV (Ecm) pt, et, mass
  p e+ 2jet X 1.8 TeV (Ecm) pt, et, mass
  p + 2jet X 1.8 TeV (Ecm) pt, et, mass
  p e e+ 2jet X 1.8 TeV (Ecm) pt, et, mass
  p + e 3jet X 1.8 TeV (Ecm) pt, et, mass
  p + e+ 3jet X 1.8 TeV (Ecm) pt, et, mass
  p 2+ 3jet X 1.8 TeV (Ecm) pt, et, mass
  p e 3jet X 1.8 TeV (Ecm) pt, et, mass
  p e+ 3jet X 1.8 TeV (Ecm) pt, et, mass
  p + 3jet X 1.8 TeV (Ecm) pt, et, mass
  p e+ 4jet X 1.8 TeV (Ecm) pt, et, mass
  p e 4jet X 1.8 TeV (Ecm) pt, et, mass
  p 4jet X 1.8 TeV (Ecm) pt, et, mass
  p + 4jet X 1.8 TeV (Ecm) pt, et, mass
  p t X 1.8 TeV (Ecm) cs
  W+ e+ e
  W e e
  W+ +
  W
  t W+ b
  W
  W+ 2jet
  W 2jet
  b jet
  b X
  jet
  + X

Particles studied
  t ex, mass
  ex, mass

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Observation of the top quark. CDF Collaboration.
    
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