@article{10902/28868, year = {2013}, url = {https://hdl.handle.net/10902/28868}, abstract = {We measure the polarization of W bosons from top-quark (t) decays into final states with a charged lepton and jets, t¯t→W+bW−¯b→ℓνbq¯q′¯b, using the full Run II data set collected by the CDF II detector, corresponding to an integrated luminosity of 8.7  fb−1. A model-independent method simultaneously determines the fraction of longitudinal (f0) and right-handed (f+) W bosons to yield f0=0.726±0.066(stat)±0.067(syst) and f+=−0.045±0.044(stat)±0.058(syst) with a correlation coefficient of −0.69. Additional results are presented under various standard model assumptions. No significant discrepancies with the standard model are observed.}, organization = {We thank the Fermilab staff and the technical staffs of the participating institutions for their vital contributions. This work was supported by the U.S. Department of Energy and National Science Foundation; the Italian Istituto Nazionale di Fisica Nucleare; the Ministry of Education, Culture, Sports, Science, and Technology of Japan; the Natural Sciences and Engineering Research Council of Canada; the National Science Council of the Republic of China; the Swiss National Science Foundation; the A. P. Sloan Foundation; the Bundesministerium für Bildung und Forschung, Germany; the Korean World Class University Program, the National Research Foundation of Korea; the Science and Technology Facilities Council and the Royal Society, U.K.; the Russian Foundation for Basic Research; the Ministerio de Ciencia e Innovación, and Programa Consolider-Ingenio 2010, Spain; the Slovak R&D Agency; the Academy of Finland; and the Australian Research Council (ARC)ARC.}, publisher = {American Physical Society}, publisher = {Physical Review D - Particles, Fields, Gravitation and Cosmology 2013, 87(3), 031104(R)}, title = {Measurement of W-boson polarization in top-quark decay using the full CDF Run II data set}, author = {Aaltonen, Timo Antero and Casal Laraña, Bruno and Cuevas Maestro, Francisco Javier and Gómez Gramuglio, Gervasio and Palencia Cortezón, José Enrique and Ruiz Jimeno, Alberto and Scodellaro, Luca and Vilar Cortabitarte, Rocío and Vizán García, Jesús Manuel}, }