781 K
27 pp.
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TitleObservation of the Top Quark
Author(s)Kim, S. B.
Publication DateAugust 1995
Report NumberFNAL/C--95/276-E
Unique IdentifierACC0200
Other NumbersCONF-9506133--2; Legacy ID: DE96001841; OSTI ID: 120911
Research OrgFermi National Accelerator Laboratory [FNAL], Batavia, IL (United States); Randall Laboratory, University of Michigan, Ann Arbor, MI (United States)
Contract NoAC02-76CH03000
Sponsoring OrgUSDOE, Washington, DC (United States)
Other Information15. International Conference on Physics in Collision, Krakow (Poland), 8-10 Jun 1995
Subject66 Physics; 44 Instrumentation, Including Nuclear And Particle Detectors; Top Particles; Particle Production; Rest Mass; Detection; Proton-Antiproton Interactions; Fermilab Tevatron; Fermilab Collider Detector; Quarks; Mass Spectra; Particle Identification; Leptons; Jet Model
KeywordsTop Quark
Related Web PagesThe Top Quark, Its Discovery, and Subsequent Research
AbstractTop quark production is observed in{bar p}p collisions at{radical}s= 1.8 TeV at the Fermilab Tevatron. The Collider Detector at Fermilab (CDF) and D{O} observe signals consistent with t{bar t} to WWb{bar b}, but inconsistent with the background prediction by 4.8{sigma} (CDF), 4.6a (D{O}). Additional evidence for the top quark Is provided by a peak in the reconstructed mass distribution. The kinematic properties of the excess events are consistent with the top quark decay. They measure the top quark mass to be 176{plus_minus}8(stat.){plus_minus}10(sys.) GeV/c{sup 2} (CDF), 199{sub -21}{sup+19}(stat.){plus_minus}22(sys.) GeV/c{sup 2} (D{O}), and the t{bar t} production cross section to be 6.8{sub -2.4}{sup+3.6}pb (CDF), 6.4{plus_minus}2.2 pb (D{O}).
781 K
27 pp.
View Document 

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