Observation of the top quark

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Top 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 ... continued below

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25 p.

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Kim, S.B. August 1, 1995.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this article can be viewed below.

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  • Kim, S.B. Univ. of Michigan, Ann Arbor, MI (United States)

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Description

Top 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}).

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25 p.

Notes

INIS; OSTI as DE96001841

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  • 15. international conference on physics in collision, Krakow (Poland), 8-10 Jun 1995

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  • Other: DE96001841
  • Report No.: FNAL/C--95/276-E
  • Report No.: CONF-9506133--2
  • Grant Number: AC02-76CH03000
  • Office of Scientific & Technical Information Report Number: 120911
  • Archival Resource Key: ark:/67531/metadc623835

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  • August 1, 1995

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • April 1, 2016, 4:25 p.m.

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Kim, S.B. Observation of the top quark, article, August 1, 1995; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc623835/: accessed August 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.