期刊
PHYSICAL REVIEW D
卷 80, 期 7, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.80.071102
关键词
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资金
- STFC [PP/F000863/1, ST/H00095X/1, ST/F007418/1, ST/H001166/1, ST/H000992/1, ST/F00754X/1, PP/E000487/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/H001166/1, PP/E000487/1, ST/H00095X/1, ST/F007418/1, ST/F00754X/1, ST/H000992/1, PP/D004284/1, PP/F000863/1] Funding Source: researchfish
We combine measurements of the top quark pair production cross section in p (p) over bar collisions in the l + jets, ll, and tau l final states ( where l is an electron or muon) at a center of mass energy of root s = 1.96 TeV in 1 fb(-1) of data collected with the D0 detector. For a top quark mass of 170 GeV/c(2), we obtain sigma(t (t) over bar) = 8.18(-0.87)(+0.98) pb in agreement with the theoretical prediction. Based on predictions from higher order quantum chromodynamics, we extract a mass for the top quark from the combined t (t) over bar cross section, consistent with the world average of the top quark mass. In addition, the ratios of t (t) over bar cross sections in different final states are used to set upper limits on the branching fractions B(t -> H(+)b -> tau(+) vb) and B(t -> H(+)b -> c (s) over barb) as a function of the charged Higgs boson mass.
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