Measurement of W-boson polarization in Top-Quark Decay in pp collisions at sqrt[s]=1.96 TeV.
We report measurements of the polarization of W bosons from top-quark decays using 2.7 fb{-1} of pp collisions collected by the CDF II detector. Assuming a top-quark mass of 175 GeV/c{2}, three measurements are performed. A simultaneous measurement of the fraction of longitudinal (f{0}) and right-h...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
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2010
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| _version_ | 1826295244849676288 |
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| author | Aaltonen, T Adelman, J Alvarez González, B Amerio, S Amidei, D Anastassov, A Annovi, A Antos, J Apollinari, G Appel, J Apresyan, A Arisawa, T Artikov, A Asaadi, J Ashmanskas, W Attal, A Aurisano, A Azfar, F Badgett, W Barbaro-Galtieri, A Barnes, V Barnett, B Barria, P Bartos, P Bauer, G |
| author_facet | Aaltonen, T Adelman, J Alvarez González, B Amerio, S Amidei, D Anastassov, A Annovi, A Antos, J Apollinari, G Appel, J Apresyan, A Arisawa, T Artikov, A Asaadi, J Ashmanskas, W Attal, A Aurisano, A Azfar, F Badgett, W Barbaro-Galtieri, A Barnes, V Barnett, B Barria, P Bartos, P Bauer, G |
| author_sort | Aaltonen, T |
| collection | OXFORD |
| description | We report measurements of the polarization of W bosons from top-quark decays using 2.7 fb{-1} of pp collisions collected by the CDF II detector. Assuming a top-quark mass of 175 GeV/c{2}, three measurements are performed. A simultaneous measurement of the fraction of longitudinal (f{0}) and right-handed (f{+}) W bosons yields the model-independent results f{0}=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 f{0} [f{+}] constraining f{+} [f{0}] to its standard model value of 0.0 [0.7] yields f{0}=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 f{0} for both the model-independent and model-dependent determinations. |
| first_indexed | 2024-03-07T03:58:03Z |
| format | Journal article |
| id | oxford-uuid:c38d1a0e-9fb5-4a13-acf1-ec190c38e574 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T03:58:03Z |
| publishDate | 2010 |
| record_format | dspace |
| spelling | oxford-uuid:c38d1a0e-9fb5-4a13-acf1-ec190c38e5742022-03-27T06:17:22ZMeasurement of W-boson polarization in Top-Quark Decay in pp collisions at sqrt[s]=1.96 TeV.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:c38d1a0e-9fb5-4a13-acf1-ec190c38e574EnglishSymplectic Elements at Oxford2010Aaltonen, TAdelman, JAlvarez González, BAmerio, SAmidei, DAnastassov, AAnnovi, AAntos, JApollinari, GAppel, JApresyan, AArisawa, TArtikov, AAsaadi, JAshmanskas, WAttal, AAurisano, AAzfar, FBadgett, WBarbaro-Galtieri, ABarnes, VBarnett, BBarria, PBartos, PBauer, GWe report measurements of the polarization of W bosons from top-quark decays using 2.7 fb{-1} of pp collisions collected by the CDF II detector. Assuming a top-quark mass of 175 GeV/c{2}, three measurements are performed. A simultaneous measurement of the fraction of longitudinal (f{0}) and right-handed (f{+}) W bosons yields the model-independent results f{0}=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 f{0} [f{+}] constraining f{+} [f{0}] to its standard model value of 0.0 [0.7] yields f{0}=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 f{0} for both the model-independent and model-dependent determinations. |
| spellingShingle | Aaltonen, T Adelman, J Alvarez González, B Amerio, S Amidei, D Anastassov, A Annovi, A Antos, J Apollinari, G Appel, J Apresyan, A Arisawa, T Artikov, A Asaadi, J Ashmanskas, W Attal, A Aurisano, A Azfar, F Badgett, W Barbaro-Galtieri, A Barnes, V Barnett, B Barria, P Bartos, P Bauer, G Measurement of W-boson polarization in Top-Quark Decay in pp collisions at sqrt[s]=1.96 TeV. |
| title | Measurement of W-boson polarization in Top-Quark Decay in pp collisions at sqrt[s]=1.96 TeV. |
| title_full | Measurement of W-boson polarization in Top-Quark Decay in pp collisions at sqrt[s]=1.96 TeV. |
| title_fullStr | Measurement of W-boson polarization in Top-Quark Decay in pp collisions at sqrt[s]=1.96 TeV. |
| title_full_unstemmed | Measurement of W-boson polarization in Top-Quark Decay in pp collisions at sqrt[s]=1.96 TeV. |
| title_short | Measurement of W-boson polarization in Top-Quark Decay in pp collisions at sqrt[s]=1.96 TeV. |
| title_sort | measurement of w boson polarization in top quark decay in pp collisions at sqrt s 1 96 tev |
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