Publication
Title
Measurement of the fraction of production via gluon-gluon fusion in collisions at =1.96 TeV
Author
Institution/Organisation
CDF Collaboration
Abstract
We present a measurement of the ratio of the tt̅ production cross section via gluon-gluon fusion to the total tt̅ production cross section in pp̅ collisions at √s=1.96  TeV at the Tevatron. Using a data sample with an integrated luminosity of 955  pb-1 recorded by the CDF II detector at Fermilab, we select events based on the tt̅ decay to lepton+jets. Using an artificial neural network technique we discriminate between tt̅ events produced via qq̅ annihilation and gg fusion, and find Gf=σ(gg→tt̅ )/σ(pp̅ →tt̅ )<0.33 at the 68% confidence level. This result is combined with a previous measurement to obtain the most stringent measurement of this quantity by CDF to date, Gf=0.07-0.07+0.15.
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 , 2009
ISSN
1550-7998 [print]
1550-2368 [online]
DOI
10.1103/PHYSREVD.79.031101
Volume/pages
79 :3 (2009) , p. 031101,1-031101,8
ISI
000263816600001
Full text (Publisher's DOI)
Full text (open access)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identifier
Creation 15.03.2010
Last edited 23.08.2022
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