Search for single top quark production at D0 in Run II

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I present a comprehensive search for electroweak production of single top quarks in Run II at the Fermilab Tevatron at {radical}s =1.96TeV. Using 230 pb{sup -1} of data collected with the D0 experiment, searches for s-channel and t-channel single top quark production have been carried out in the electron+jets and muon+jets decay channels using secondary-vertex b-quark tagging to select signal-like events. A binned likelihood has been constructed from the outputs of neural networks in order to maximize the sensitivity to single top quark production. No evidence for a single top quark signal is found. However, the 95% confidence level upper ... continued below

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10 pages

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Schwienhorst, Reinhard & U., /Michigan State April 1, 2005.

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Description

I present a comprehensive search for electroweak production of single top quarks in Run II at the Fermilab Tevatron at {radical}s =1.96TeV. Using 230 pb{sup -1} of data collected with the D0 experiment, searches for s-channel and t-channel single top quark production have been carried out in the electron+jets and muon+jets decay channels using secondary-vertex b-quark tagging to select signal-like events. A binned likelihood has been constructed from the outputs of neural networks in order to maximize the sensitivity to single top quark production. No evidence for a single top quark signal is found. However, the 95% confidence level upper limits on the production cross section of 6.4 pb in the s-channel and 5.0 pb in the t-channel are improvements over previous limits by a factor of two and are approaching the cross section region predicted by the standard model.

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10 pages

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  • Report No.: FERMILAB-FN-0795-E
  • Grant Number: AC02-07CH11359
  • DOI: 10.2172/907796 | External Link
  • Office of Scientific & Technical Information Report Number: 907796
  • Archival Resource Key: ark:/67531/metadc890005

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Office of Scientific & Technical Information Technical Reports

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  • April 1, 2005

Added to The UNT Digital Library

  • Sept. 22, 2016, 2:13 a.m.

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  • Dec. 7, 2016, 9:01 p.m.

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Schwienhorst, Reinhard & U., /Michigan State. Search for single top quark production at D0 in Run II, report, April 1, 2005; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc890005/: accessed April 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.