Title Measurement of the ratio $\sigma_{t\overline{t}}/\sigma_{Z/\gamma^{*}\rightarrow ll}$ and precise extraction of the $t\overline{t}$ cross section Measurement of the ratio $\sigma_{t\overline{t}}/\sigma_{Z/\gamma^{*}\rightarrow ll}$ and precise extraction of the $t\overline{t}$ cross section Author Aaltonen, T. Van Remortel, N. et al. Faculty/Department Faculty of Sciences. Physics Publication type article Publication 2010 New York, N.Y. , 2010 Subject Physics Source (journal) PHYSICAL REVIEW LETTERS Physical review letters. - New York, N.Y. Volume/pages 105(2010) :1 , p. 012001,1-012001,7 ISSN 0031-9007 ISI 000279273300001 Carrier E-only publicatie Target language English (eng) Full text (Publishers DOI) Affiliation University of Antwerp Abstract We report a measurement of the ratio of the tt̅ to Z/γ* production cross sections in √s=1.96  TeV pp̅ collisions using data corresponding to an integrated luminosity of up to 4.6  fb-1, collected by the CDF II detector. The tt̅ cross section ratio is measured using two complementary methods, a b-jet tagging measurement and a topological approach. By multiplying the ratios by the well-known theoretical Z/γ*→ll cross section predicted by the standard model, the extracted tt̅ cross sections are effectively insensitive to the uncertainty on luminosity. A best linear unbiased estimate is used to combine both measurements with the result σtt̅ =7.70±0.52  pb, for a top-quark mass of 172.5  GeV/c2. Full text (open access) https://repository.uantwerpen.be/docman/irua/06c38e/e5ac6331.pdf E-info http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000279273300001&DestLinkType=RelatedRecords&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000279273300001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000279273300001&DestLinkType=CitingArticles&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848 Handle