|
Title
|
|
|
|
First measurement of the fraction of top-quark pair production through gluon-gluon fusion
|
|
|
Author
|
|
|
|
|
|
|
Institution/Organisation
|
|
|
|
CDF Collaboration
|
|
|
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. |
|
|
|
Language
|
|
|
|
English
|
|
|
Source (journal)
|
|
|
|
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
|
|
|
Publication
|
|
|
|
Ridge, N.Y.
:
American Physical Society
,
2008
|
|
|
ISSN
|
|
|
|
1550-7998
[print]
1550-2368
[online]
|
|
|
DOI
|
|
|
|
10.1103/PHYSREVD.78.111101
|
|
|
Volume/pages
|
|
|
|
78
:11
(2008)
, p. 111101,1-111101,8
|
|
|
ISI
|
|
|
|
000262252200001
|
|
|
Full text (Publisher's DOI)
|
|
|
|
|
|
|
Full text (open access)
|
|
|
|
|
|