Journal
PHYSICAL REVIEW LETTERS
Volume 97, Issue 8, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.97.082004
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Funding
- Science and Technology Facilities Council [PPA/A/S/2003/00461/2, PP/E000444/1, PP/E000452/1] Funding Source: researchfish
- STFC [PP/E000452/1] Funding Source: UKRI
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We present a measurement of the top quark pair production cross section in p (p) over bar collisions at root s=1.96 TeV using 318 pb(-1) of data collected with the Collider Detector at Fermilab. We select t (t) over bar decays into the final states e nu+jets and mu nu+jets, in which at least one b quark from the t-quark decays is identified using a secondary vertex-finding algorithm. Assuming a top quark mass of 178 GeV/c(2), we measure a cross section of 8.7 +/- 0.9(stat)(-0.9)(+1.1)(syst) pb. We also report the first observation of t (t) over bar with significance greater than 5 sigma in the subsample in which both b quarks are identified, corresponding to a cross section of 10.1(-1.4)(+1.6)(stat)(-1.3)(+2.0)(syst) pb.
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