Results on top quark production from D0

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The D{O} Collaboration reports on a search for the Standard Model top quark in p{bar p} collisions at {radical}s = 1.8 TeV at the Fermilab Tevatron, with an integrated luminosity of approximately 50 pb{sup -1}. We have searched for t{bar t} production in the dilepton and single lepton channels with and without tagging of b quark jets. We observe 17 events with an expected background of 3.8 {plus_minus} 0.6 events. The probability for an upward, fluctuation of the background to produce the observed signal is 2 x 10{sup -6} (equivalent to 4.6 standard deviations). The kinematic properties of the excess ... continued below

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7 p.

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Wimpenny, S.J. August 1, 1995.

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Description

The D{O} Collaboration reports on a search for the Standard Model top quark in p{bar p} collisions at {radical}s = 1.8 TeV at the Fermilab Tevatron, with an integrated luminosity of approximately 50 pb{sup -1}. We have searched for t{bar t} production in the dilepton and single lepton channels with and without tagging of b quark jets. We observe 17 events with an expected background of 3.8 {plus_minus} 0.6 events. The probability for an upward, fluctuation of the background to produce the observed signal is 2 x 10{sup -6} (equivalent to 4.6 standard deviations). The kinematic properties of the excess events are consistent with top quark decay. We conclude that we have observed the top quark and measure its mass to be 199{sub -21}{sup +19}(stat.){plus_minus}22 (syst.) GeV/c{sup 2} and its production cross section to be 6.4 {plus_minus} 2.2 pb.

Physical Description

7 p.

Notes

INIS; OSTI as DE96001842

Source

  • Workshop on the physics of the top quark, Ames, IA (United States), 25-26 May 1995

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  • Other: DE96001842
  • Report No.: FNAL/C--95/260-E
  • Report No.: CONF-9505295--1
  • Grant Number: AC02-76CH03000
  • Office of Scientific & Technical Information Report Number: 120913
  • Archival Resource Key: ark:/67531/metadc621870

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  • August 1, 1995

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  • June 16, 2015, 7:43 a.m.

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  • April 1, 2016, 4:50 p.m.

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Wimpenny, S.J. Results on top quark production from D0, article, August 1, 1995; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc621870/: accessed August 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.