Title Measurement of W-boson polarization in top-quark decay in $p\overline{p}$ collisions at $\sqrt{s}$=1.96 TeVMeasurement of W-boson polarization in top-quark decay 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 Research group Elementary Particle Physics Publication type article Publication 2010New York, N.Y., 2010 Subject Physics Source (journal) Physical review letters. - New York, N.Y. Volume/pages 105(2010):4, p. 042002,1-042002,8 ISSN 0031-9007 ISI 000280234400009 Carrier E Target language English (eng) Full text (Publishers DOI) Affiliation University of Antwerp Abstract We report measurements of the polarization of W bosons from top-quark decays using 2.7 fb-1 of pp̅ collisions collected by the CDF II detector. Assuming a top-quark mass of 175  GeV/c2, three measurements are performed. A simultaneous measurement of the fraction of longitudinal (f0) and right-handed (f+) W bosons yields the model-independent results f0=0.88±0.11(stat)±0.06(syst) and f+=-0.15±0.07(stat)±0.06(syst) with a correlation coefficient of -0.59. A measurement of f0 [f+] constraining f+ [f0] to its standard model value of 0.0 [0.7] yields f0=0.70±0.07(stat)±0.04(syst) [f+=-0.01±0.02(stat)±0.05(syst)]. All these results are consistent with standard model expectations. We achieve the single most precise measurements of f0 for both the model-independent and model-dependent determinations. Full text (open access) https://repository.uantwerpen.be/docman/irua/e35ea4/cf91f2f9.pdf E-info http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000280234400009&DestLinkType=RelatedRecords&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000280234400009&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000280234400009&DestLinkType=CitingArticles&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848 Handle