181298 Conferences false [["minutes", "Minutes"], ["notes", "Notes"], ["paper", "Paper"], ["poster", "Poster"], ["slides", "Slides"], ["summary", "Summary"]] University of Melbourne (AU) geoffrey.taylor@cern.ch 30704 javd@ph.unimelb.edu.au 36th International Conference on High Energy Physics. False Melbourne Convention and Exhibition Centre

Melbourne Australia

2012-07-04T14:00:00 2012-07-11T18:20:00 2012-03-08T14:20:49 2012-07-10T02:57:18 Australia/Melbourne University of Melbourne (AU) geoffrey.taylor@cern.ch University of Melbourne raymondv@unimelb.edu.au 545 false [["minutes", "Minutes"], ["notes", "Notes"], ["paper", "Paper"], ["poster", "Poster"], ["slides", "Slides"], ["summary", "Summary"]] Track 4 - Top Quark Physics 0 Parallel Sessions University of Arizona (US) erich.varnes@cern.ch University of Arizona (US) erich.varnes@cern.ch Melbourne Convention and Exhibition Centre

Melbourne Australia

Room 216 2012-07-05T16:30:00 2012-07-05T16:45:00 00:15 We report the combination of recent measurements of the helicity of the W boson from top quark decay by the CDF and D0 collaborations, based on data samples corresponding to integrated luminosities of 2.7 – 5.4 fb−1 of ppbar collisions collected during Run II of the Fermilab Tevatron Collider. Combining measurements that simultaneously determine the fractions of W bosons with longitudinal (f0) and right-handed (f+) helicities, we find f0 = 0.722 ± 0.081 [± 0.062 (stat.) ± 0.052 (syst.)] and f+ = −0.033 ± 0.046 [± 0.034 (stat.) ± 0.031 (syst.)]. Combining measurements where one of the helicity fractions is fixed to the value expected in the standard model, we find f0 = 0.682±0.057 [± 0.035 (stat.)±0.046 (syst.)] and f+ = −0.015±0.035 [± 0.018 (stat.)±0.030 (syst.)]. The results are consistent with standard model expectations. slides doc http://indico.cern.ch/images/word.png word file ppt http://indico.cern.ch/images/powerpoint.png powerpoint file pdf http://indico.cern.ch/images/pdf_small.png pdf file odt http://indico.cern.ch/images/writer.png writer file odp http://indico.cern.ch/images/impress.png presentation file ods http://indico.cern.ch/images/calc.png spreadsheet file other http://indico.cern.ch/images/file_small.png unknown type file link http://indico.cern.ch/images/link.png link 2013-05-20 2013-05-21