Title Limits on the production of narrow $t\overline{t}$ resonances in $p\overline{p}$ collisions at $\sqrt{s}$=1.96 TeV Author Aaltonen, T. Van Remortel, N. et al. Faculty/Department Faculty of Sciences. Physics Publication type article Publication 2008 Lancaster, Pa , 2008 Subject Physics Source (journal) Physical review : D : particles and fields. - Lancaster, Pa, 1970 - 2003 Volume/pages 77(2008) :5 , p. 051102,1-051102,7 ISSN 0556-2821 ISI 000254544200002 Carrier E Target language English (eng) Full text (Publishers DOI) Affiliation University of Antwerp 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. Full text (open access) https://repository.uantwerpen.be/docman/irua/765298/d0278235.pdf E-info http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000254544200002&DestLinkType=RelatedRecords&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000254544200002&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000254544200002&DestLinkType=CitingArticles&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848 Handle