Observation of the top quark with the D0 detector

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The D0 collaboration reports on the observation of top quark in p{bar p} collisions at {radical}{bar s} = 1.8 TeV at the Fermilab Tevatron. We measure the top quark mass to be 199{sub -21}{sup +19}(stat.){sub -21}{sup +14}(syst.) GeV/c{sup 2} and its production cross section to be 6.4 {+-} 2.2 pb. Our result is based on approximately 50 pb{sup -1} of data. We observe 17 events with an expected background of 3.8 {+-} 0.6 events. The probability of 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 ... continued below

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35 p.

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Hadley, N.J. November 1, 1995.

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Description

The D0 collaboration reports on the observation of top quark in p{bar p} collisions at {radical}{bar s} = 1.8 TeV at the Fermilab Tevatron. We measure the top quark mass to be 199{sub -21}{sup +19}(stat.){sub -21}{sup +14}(syst.) GeV/c{sup 2} and its production cross section to be 6.4 {+-} 2.2 pb. Our result is based on approximately 50 pb{sup -1} of data. We observe 17 events with an expected background of 3.8 {+-} 0.6 events. The probability of 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 events are consistent with top quark decay, and the distribution of events across the seven decay channels is consistent with the Standard Model top quark branching fractions. We describe the analysis that led to the observation of the top quark as well as the properties of the top quark events.

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35 p.

Notes

INIS; OSTI as DE96002917

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  • 23. SLAC summer institute on particle physics, Stanford, CA (United States), 10-21 Jul 1995

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  • Other: DE96002917
  • Report No.: FNAL/C--95/352-E
  • Report No.: CONF-9507201--1
  • Grant Number: AC02-76CH03000
  • DOI: 10.2172/155663 | External Link
  • Office of Scientific & Technical Information Report Number: 155663
  • Archival Resource Key: ark:/67531/metadc625651

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • November 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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Hadley, N.J. Observation of the top quark with the D0 detector, report, November 1, 1995; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc625651/: accessed October 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.