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1826216145625022464
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MIT
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© 2013 Elsevier B.V. All rights reserved. We present a measurement of the W-boson polarization in top-quark decays in tt- events with decays to dilepton final states using data corresponding to 5.1 fb-1 of integrated luminosity in pp- collisions collected by the CDF II detector at the Tevatron. Assuming a top-quark mass of 172.5 GeV/c2, a simultaneous measurement of the fractions of longitudinal ( f0) and right-handed ( f+) W-bosons yields the results f0 = 0.70-0.17+0.18 (stat) ± 0.06(syst) and f+ =-0.09 ± 0.09(stat) ± 0.03(syst). Combining this measurement with our previous measurement based on single-lepton final states, we obtain f0 = 0.84 ± 0.09(stat) ± 0.05(syst) and f+ =-0.16 ± 0.05(stat) ± 0.04(syst). The results are consistent with the standard model expectation.
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2024-09-23T16:43:00Z
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Article
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mit-1721.1/134227
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Massachusetts Institute of Technology
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English
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2024-09-23T16:43:00Z
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2021
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Elsevier BV
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dspace
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mit-1721.1/1342272022-04-01T17:58:55Z W-boson polarization measurement in the t t ¯ dilepton channel using the CDF II detector © 2013 Elsevier B.V. All rights reserved. We present a measurement of the W-boson polarization in top-quark decays in tt- events with decays to dilepton final states using data corresponding to 5.1 fb-1 of integrated luminosity in pp- collisions collected by the CDF II detector at the Tevatron. Assuming a top-quark mass of 172.5 GeV/c2, a simultaneous measurement of the fractions of longitudinal ( f0) and right-handed ( f+) W-bosons yields the results f0 = 0.70-0.17+0.18 (stat) ± 0.06(syst) and f+ =-0.09 ± 0.09(stat) ± 0.03(syst). Combining this measurement with our previous measurement based on single-lepton final states, we obtain f0 = 0.84 ± 0.09(stat) ± 0.05(syst) and f+ =-0.16 ± 0.05(stat) ± 0.04(syst). The results are consistent with the standard model expectation. 2021-10-27T20:04:04Z 2021-10-27T20:04:04Z 2013 2019-06-18T18:55:10Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/134227 Aaltonen, T., et al. "W-Boson Polarization Measurement in the T(T)over-Bar Dilepton Channel Using the Cdf Ii Detector." Physics Letters B 722 1-3 (2013): 48-54. en 10.1016/J.PHYSLETB.2013.03.032 Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics Creative Commons Attribution-NonCommercial-NoDerivs License http://creativecommons.org/licenses/by-nc-nd/4.0/ application/pdf Elsevier BV arXiv
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| spellingShingle |
W-boson polarization measurement in the t t ¯ dilepton channel using the CDF II detector
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| title |
W-boson polarization measurement in the t t ¯ dilepton channel using the CDF II detector
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| title_full |
W-boson polarization measurement in the t t ¯ dilepton channel using the CDF II detector
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| title_fullStr |
W-boson polarization measurement in the t t ¯ dilepton channel using the CDF II detector
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| title_full_unstemmed |
W-boson polarization measurement in the t t ¯ dilepton channel using the CDF II detector
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| title_short |
W-boson polarization measurement in the t t ¯ dilepton channel using the CDF II detector
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| title_sort |
w boson polarization measurement in the t t ¯ dilepton channel using the cdf ii detector
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| url |
https://hdl.handle.net/1721.1/134227
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