Physics of the top quark at D0 new measurement of the production cross section and mass

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We present a measurement of the t{anti t} production cross section in p{anti p} collisions at {radical}s = 1.8 TeV and a measurement of top quark mass m{sub t} by the D0 experiment at the Fermilab Tevatron. The measurements are based on the data from the 1992- 1996 run during which the D0 detector was exposed to the integrated luminosity of approximately 125 pb{sup -1}. We observe 39 t{anti t} candidate events in the dilepton and lepton+jets decay channels with an expected background of 13.7 {+-} 2.2 events. We measure the top quark mass m{sub t} using a two constraint ... continued below

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20 p.

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Genser, K. & Collaboration, DO July 1, 1997.

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We present a measurement of the t{anti t} production cross section in p{anti p} collisions at {radical}s = 1.8 TeV and a measurement of top quark mass m{sub t} by the D0 experiment at the Fermilab Tevatron. The measurements are based on the data from the 1992- 1996 run during which the D0 detector was exposed to the integrated luminosity of approximately 125 pb{sup -1}. We observe 39 t{anti t} candidate events in the dilepton and lepton+jets decay channels with an expected background of 13.7 {+-} 2.2 events. We measure the top quark mass m{sub t} using a two constraint fit to m{sub t} in t{anti t} {yields} bW{sup +} {anti b}W{sup -} final states with one W decaying to q{anti q} and the other to e{nu} or {mu}{nu}. Events are binned in the fit mass versus a measure of probability for events to be the signal rather than a background. Likelihood fits to the data yield m{sub t} = 173.3 {+-} 5.6 (stat) {+-} 6.2 (syst) GeV/c{sup 2}. For this mass we measure the t{anti t} production cross section to be 5.5 {+-} 1.8 pb.

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20 p.

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INIS; OSTI as DE97053685

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  • 11. Les Rencontres de Physique de la Vallee D`Aoste: results and perspectives in particle physics, LaThuile (Italy), 2-8 Mar 1997

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  • Other: DE97053685
  • Report No.: FNAL/C--97/233-E
  • Report No.: CONF-9703116--
  • Grant Number: AC02-76CH03000
  • Office of Scientific & Technical Information Report Number: 565068
  • Archival Resource Key: ark:/67531/metadc699071

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  • July 1, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • April 1, 2016, 5:42 p.m.

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Genser, K. & Collaboration, DO. Physics of the top quark at D0 new measurement of the production cross section and mass, article, July 1, 1997; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc699071/: accessed September 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.