Title
Measurement of the ratio <tex>$\sigma_{t\overline{t}}/\sigma_{Z/\gamma^{*}\rightarrow ll}$</tex> and precise extraction of the <tex>$t\overline{t}$</tex> cross section Measurement of the ratio <tex>$\sigma_{t\overline{t}}/\sigma_{Z/\gamma^{*}\rightarrow ll}$</tex> and precise extraction of the <tex>$t\overline{t}$</tex> cross section
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
New York, N.Y. ,
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 tt&#773; to Z/γ* production cross sections in √s=1.96  TeV pp&#773; collisions using data corresponding to an integrated luminosity of up to 4.6  fb-1, collected by the CDF II detector. The tt&#773; 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 tt&#773; cross sections are effectively insensitive to the uncertainty on luminosity. A best linear unbiased estimate is used to combine both measurements with the result σtt&#773; =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
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