Title
Search for new color-octet vector particle decaying to <tex>$t\overline{t}$</tex> in <tex>$p\overline{p}$</tex> collisions at <tex>$\sqrt{s}$</tex>= 1.96 TeV Search for new color-octet vector particle decaying to <tex>$t\overline{t}$</tex> in <tex>$p\overline{p}$</tex> collisions at <tex>$\sqrt{s}$</tex>= 1.96 TeV
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Amsterdam ,
Subject
Physics
Source (journal)
Physics letters: B. - Amsterdam, 1967, currens
Volume/pages
691(2010) :4 , p. 183-190
ISSN
0370-2693
ISI
000280328200002
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
We present the result of a search for a massive color-octet vector particle, (e.g. a massive gluon) decaying to a pair of top quarks in protonantiproton collisions with a center-of-mass energy of 1.96 TeV. This search is based on 1.9 fb−1 of data collected using the CDF detector during Run II of the Tevatron at Fermilab. We study View the MathML source events in the lepton + jets channel with at least one b-tagged jet. A massive gluon is characterized by its mass, decay width, and the strength of its coupling to quarks. These parameters are determined according to the observed invariant mass distribution of top quark pairs. We set limits on the massive gluon coupling strength for masses between 400 and 800 GeV/c2 and width-to-mass ratios between 0.05 and 0.50. The coupling strength of the hypothetical massive gluon to quarks is consistent with zero within the explored parameter space.
E-info
https://repository.uantwerpen.be/docman/iruaauth/9b9866/14215fd25cc.pdf
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