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Title
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First measurement of the fraction of top-quark pair production through gluon-gluon fusion
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Author
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Institution/Organisation
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CDF Collaboration
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Abstract
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| We present the first measurement of σ(gg→tt̅ )/σ(pp̅ →tt̅ ). We use 0.96 fb-1 of √s=1.96 TeV pp̅ collision data recorded with the CDF II detector at Fermilab. Using charged particles with low transverse momentum in tt̅ events, we find σ(gg→tt̅ )/σ(pp̅ →tt̅ )=0.07±0.14(stat)±0.07(syst), corresponding to a 95% confidence level upper limit of 0.33, in agreement with the standard model next-to-leading-order prediction of 0.15±0.05. |
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Language
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English
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Source (journal)
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Physical review : D : particles, fields, gravitation, and cosmology / American Physical Society. - Ridge, N.Y., 2004 - 2015
Physical review : D : particles and fields. - Lancaster, Pa, 1970 - 2003
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Publication
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Ridge, N.Y.
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American Physical Society
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2008
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ISSN
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1550-7998
[print]
1550-2368
[online]
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Volume/pages
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78
:11
(2008)
, p. 111101,1-111101,8
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ISI
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000262252200001
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Full text (Publisher's DOI)
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Full text (open access)
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