Publication
Title
Limits on the production of narrow resonances in collisions at =1.96 TeV
Author
Abstract
We search for evidence of resonant top quark pair production in 955 pb-1 of pp̅ collisions at √s=1.96   TeV recorded with the CDF II detector at the Fermilab Tevatron. For fully reconstructed candidate tt̅ events triggered on leptons with large transverse momentum and containing at least one identified b-quark jet, we compare the invariant mass spectrum of tt̅ pairs to the expected superposition of standard model tt̅ , non-tt̅ backgrounds, and a simple resonance model based on a sequential Z′ boson. We establish upper limits for σ(pp̅ →Z′)·Br(Z′→tt̅ ) in the Z′ mass interval from 450  GeV/c2 to 900  GeV/c2. A topcolor leptophobic Z′ is ruled out below 720  GeV/c2, and the cross section of any narrow Z′-like state decaying to tt̅ is found to be less than 0.64 pb at 95% C.L. for MZ′ above 700  GeV/c2.
Language
English
Source (journal)
Physical review : D : particles and fields. - Lancaster, Pa, 1970 - 2003
Publication
Lancaster, Pa : 2008
ISSN
0556-2821
Volume/pages
77:5(2008), p. 051102,1-051102,7
ISI
000254544200002
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
Identification
Creation 17.03.2010
Last edited 10.06.2017
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