First Measurement of the Fraction of Top Quark Pair Production Through Gluon-Gluon Fusion
Authors:
Collaboration, CDF
Aaltonen, T.
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| Abstract: We present the first measurement of Σ(gG → t¯ t)/Σ(p¯ p → t¯ t). We use 0.96 fb -1 of √s = 1.96 TeV p¯ p collision data recorded with the CDF II detector at Fermilab. We identify the candidate t¯ t events with a high-energy charged lepton, a neutrino candidate, and four or more jets with at least one identified as originating from a b quark. Using charged particles with low transverse momentum in t¯ t events, we find Σ(gg → t¯ t)/Σ(p¯ p → t¯ t) = 0.07 ± 0.14(stat) ± 0.07(syst), in agreement with the standard model NLO prediction of 0.15 ± 0.05. |
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| Publication Date: |
01 Dec 2007
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| Report numbers: |
FERMILAB-PUB-07-665-E
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| DOE Contract number: |
AC02-76CH03000
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| Resource Type: |
Journal Article
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| Research Organizations: |
Fermi National Accelerator Laboratory (FNAL), Batavia, IL
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| Sponsoring Organizations: |
USDOE
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| Country of Publication: |
United States
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| Language: |
English
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