Measurement of the tt-bar Production Cross Section and Top Quark Mass at DO
- University of Arizona (United States)
I report on preliminary measurements of the tt-bar production cross section, and a measurement of the top quark mass, performed by the DO Collaboration. The cross section is measured using candidates for dilepton, single-lepton, and all-hadronic tt-bar decays collected at DO during RunII of the Tevatron. The results for the various modes are: {sigma}{sub tt-bar} 14.3{sub -4.3}{sup +5.1} (stat.) {sub -1.9}{sup +2.6} (syst.) {+-} 0.9 (lumi.) pb (dilepton){sigma}{sub tt-bar} = 7.2{sub -2.4}{sup +2.6} (stat.) {sub -1.7}{sup +1.6} (syst.) {+-} 0.5 (lumi.) pb (lepton+jets){sigma}{sub tt-bar} 7.7{sub -3.3}{sup +3.4} (stat.) {sub -3.7}{sup +4.7} (syst.) {+-} 0.5 (lumi.) pb 6(all-hadronic).The mass measurement uses an improved method to re-analyze lepton+jets events collected during RunI of the Tevatron, and obtains mt 180.1 {+-} 3.6 (stat.) {+-} 4.0 (syst.) GeV/c2.
- OSTI ID:
- 20630728
- Journal Information:
- AIP Conference Proceedings, Vol. 753, Issue 1; Conference: HCP2004: 15. topical conference on hadron collider physics, East Lansing, MI (United States), 14-18 Jun 2004; Other Information: DOI: 10.1063/1.1896702; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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