Measurement of the helicity of W bosons in top-quark decays
We measure the branching fraction of the top quark to longitudinally and right-handed polarized W bosons, F0 and F+, using approximately 200pb-1 of p̄p collisions collected by the CDF II detector. We analyze two quantities sensitive to the W helicity: the invariant mass of the charged lepton and the...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2006
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| _version_ | 1826259275403493376 |
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| author | Abulencia, A Acosta, D Adelman, J Affolder, T Akimoto, T Albrow, MG Ambrose, D Amerio, S Amidei, D Anastassov, A Anikeev, K Annovi, A Antos, J Aoki, M Apollinari, G Arguin, J Arisawa, T Artikov, A Ashmanskas, W Attal, A Azfar, F Azzi-Bacchetta, P Azzurri, P Bacchetta, N Bachacou, H |
| author_facet | Abulencia, A Acosta, D Adelman, J Affolder, T Akimoto, T Albrow, MG Ambrose, D Amerio, S Amidei, D Anastassov, A Anikeev, K Annovi, A Antos, J Aoki, M Apollinari, G Arguin, J Arisawa, T Artikov, A Ashmanskas, W Attal, A Azfar, F Azzi-Bacchetta, P Azzurri, P Bacchetta, N Bachacou, H |
| author_sort | Abulencia, A |
| collection | OXFORD |
| description | We measure the branching fraction of the top quark to longitudinally and right-handed polarized W bosons, F0 and F+, using approximately 200pb-1 of p̄p collisions collected by the CDF II detector. We analyze two quantities sensitive to the W helicity: the invariant mass of the charged lepton and the bottom-quark jet in the decay t→Wb→ νb (where =e or μ), and the transverse momentum of the charged lepton. Constrained fits yield F0=0.74-0.34+0.22, and F+<0.27 at the 95% confidence level. These measurements are consistent with the standard model predictions. © 2006 The American Physical Society. |
| first_indexed | 2024-03-06T18:47:17Z |
| format | Journal article |
| id | oxford-uuid:0ef1d8e8-e6fe-40bb-a040-3b6904ddea58 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T18:47:17Z |
| publishDate | 2006 |
| record_format | dspace |
| spelling | oxford-uuid:0ef1d8e8-e6fe-40bb-a040-3b6904ddea582022-03-26T09:48:47ZMeasurement of the helicity of W bosons in top-quark decaysJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:0ef1d8e8-e6fe-40bb-a040-3b6904ddea58EnglishSymplectic Elements at Oxford2006Abulencia, AAcosta, DAdelman, JAffolder, TAkimoto, TAlbrow, MGAmbrose, DAmerio, SAmidei, DAnastassov, AAnikeev, KAnnovi, AAntos, JAoki, MApollinari, GArguin, JArisawa, TArtikov, AAshmanskas, WAttal, AAzfar, FAzzi-Bacchetta, PAzzurri, PBacchetta, NBachacou, HWe measure the branching fraction of the top quark to longitudinally and right-handed polarized W bosons, F0 and F+, using approximately 200pb-1 of p̄p collisions collected by the CDF II detector. We analyze two quantities sensitive to the W helicity: the invariant mass of the charged lepton and the bottom-quark jet in the decay t→Wb→ νb (where =e or μ), and the transverse momentum of the charged lepton. Constrained fits yield F0=0.74-0.34+0.22, and F+<0.27 at the 95% confidence level. These measurements are consistent with the standard model predictions. © 2006 The American Physical Society. |
| spellingShingle | Abulencia, A Acosta, D Adelman, J Affolder, T Akimoto, T Albrow, MG Ambrose, D Amerio, S Amidei, D Anastassov, A Anikeev, K Annovi, A Antos, J Aoki, M Apollinari, G Arguin, J Arisawa, T Artikov, A Ashmanskas, W Attal, A Azfar, F Azzi-Bacchetta, P Azzurri, P Bacchetta, N Bachacou, H Measurement of the helicity of W bosons in top-quark decays |
| title | Measurement of the helicity of W bosons in top-quark decays |
| title_full | Measurement of the helicity of W bosons in top-quark decays |
| title_fullStr | Measurement of the helicity of W bosons in top-quark decays |
| title_full_unstemmed | Measurement of the helicity of W bosons in top-quark decays |
| title_short | Measurement of the helicity of W bosons in top-quark decays |
| title_sort | measurement of the helicity of w bosons in top quark decays |
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