Measurement of the tt̄ production cross section and top quark mass at DØ

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

I report on preliminary measurements of the tt̄ production cross section, and a measurement of the top quark mass, performed by the DØ Collaboration. The cross section is measured using candidates for dilepton, single-lepton, and all-hadronic tt̄ decays collected at DØ during RunII of the Tevatron. The results for the various modes are: σ tt̄=14.3 -4.3 +5.1(stat.) -1.9 +2.6(syst.)±0.9(lumi.)pb(dilepton) σ tt̄=7.2 -2.4 +2.6(stat.) -1.7 +1.6(syst.)±0.5(lumi.)pb(lepton+jets) σ tt̄=7.7 -3.3 +3.4(stat.) -3.7 +4.7(syst.)±0.5(lumi.)pb6(all-hadronic). The mass measurement uses an improved method to re-analyze lepton+jets events collected during RunI of the Tevatron, and obtains m t = 180.1 ± 3.6 (stat.) ± 4.0 (syst.) GeV/c 2.

Original languageEnglish (US)
Title of host publicationHADRON COLLIDER PHYSICS
Subtitle of host publication15th Topical Conference on Hadron Collider Physics, HCP2004
Pages205-213
Number of pages9
DOIs
StatePublished - Mar 22 2005
Event15th Topical Conference on Hadron Collider Physics, HCP2004 - East Lansing, MI, United States
Duration: Jun 14 2004Jun 18 2004

Publication series

NameAIP Conference Proceedings
Volume753
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other15th Topical Conference on Hadron Collider Physics, HCP2004
CountryUnited States
CityEast Lansing, MI
Period6/14/046/18/04

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Varnes, E. W. (2005). Measurement of the tt̄ production cross section and top quark mass at DØ. In HADRON COLLIDER PHYSICS: 15th Topical Conference on Hadron Collider Physics, HCP2004 (pp. 205-213). (AIP Conference Proceedings; Vol. 753). https://doi.org/10.1063/1.1896702