Title
First measurement of the fraction of top-quark pair production through gluon-gluon fusion First measurement of the fraction of top-quark pair production through gluon-gluon fusion
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Lancaster, Pa ,
Subject
Physics
Source (journal)
Physical review : D : particles and fields. - Lancaster, Pa, 1970 - 2003
Volume/pages
78(2008) :11 , p. 111101,1-111101,8
ISSN
0556-2821
ISI
000262252200001
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Abstract
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.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/b81d74/8f3cbea1.pdf
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