Combination of CDF and D0 measurements of the W boson helicity in top quark decays
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[superscript -1] of pp̅ collisions collected during Run II of the Fermilab Tevatron coll...
| Main Authors: | , , |
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2012
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| Online Access: | http://hdl.handle.net/1721.1/71676 https://orcid.org/0000-0002-6047-4211 |
| _version_ | 1811083885829685248 |
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| author | Gomez-Ceballos, Guillelmo Goncharov, Maxim Paus, Christoph M. E. |
| author2 | Massachusetts Institute of Technology. Laboratory for Nuclear Science |
| author_facet | Massachusetts Institute of Technology. Laboratory for Nuclear Science Gomez-Ceballos, Guillelmo Goncharov, Maxim Paus, Christoph M. E. |
| author_sort | Gomez-Ceballos, Guillelmo |
| collection | MIT |
| description | 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[superscript -1] of pp̅ collisions collected during Run II of the Fermilab Tevatron collider. Combining measurements that simultaneously determine the fractions of W bosons with longitudinal (f[subscript 0]) and right-handed (f[subscript +]) helicities, we find f[subscript 0]=0.722±0.081[±0.062(stat)±0.052(syst)] and f[subscript +]=-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 f[subscript 0]=0.682±0.057[±0.035(stat)±0.046(syst)] for fixed f[subscript +] and f[subscript +]=-0.015±0.035[±0.018(stat)±0.030(syst)] for fixed f[subscript 0]. The results are consistent with standard model expectations. |
| first_indexed | 2024-09-23T12:41:10Z |
| format | Article |
| id | mit-1721.1/71676 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T12:41:10Z |
| publishDate | 2012 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/716762022-10-01T10:27:28Z Combination of CDF and D0 measurements of the W boson helicity in top quark decays Gomez-Ceballos, Guillelmo Goncharov, Maxim Paus, Christoph M. E. Massachusetts Institute of Technology. Laboratory for Nuclear Science Paus, Cristoph M. E. Gomez-Ceballos, Guillelmo Goncharov, Maxim Paus, Christoph M. E. 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[superscript -1] of pp̅ collisions collected during Run II of the Fermilab Tevatron collider. Combining measurements that simultaneously determine the fractions of W bosons with longitudinal (f[subscript 0]) and right-handed (f[subscript +]) helicities, we find f[subscript 0]=0.722±0.081[±0.062(stat)±0.052(syst)] and f[subscript +]=-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 f[subscript 0]=0.682±0.057[±0.035(stat)±0.046(syst)] for fixed f[subscript +] and f[subscript +]=-0.015±0.035[±0.018(stat)±0.030(syst)] for fixed f[subscript 0]. The results are consistent with standard model expectations. 2012-07-18T13:09:34Z 2012-07-18T13:09:34Z 2012-04 2012-02 Article http://purl.org/eprint/type/JournalArticle 1550-7998 1089-4918 http://hdl.handle.net/1721.1/71676 T. Aaltonen et al. (CDF and D0 Collaborations)."Combination of CDF and D0 measurements of the W boson helicity in top quark decays" Physical Review D 85, 071106(R) (2012). © 2012 American Physical Society https://orcid.org/0000-0002-6047-4211 en_US http://dx.doi.org/10.1103/PhysRevD.85.071106 Physical Review D Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Physical Society APS |
| spellingShingle | Gomez-Ceballos, Guillelmo Goncharov, Maxim Paus, Christoph M. E. Combination of CDF and D0 measurements of the W boson helicity in top quark decays |
| title | Combination of CDF and D0 measurements of the W boson helicity in top quark decays |
| title_full | Combination of CDF and D0 measurements of the W boson helicity in top quark decays |
| title_fullStr | Combination of CDF and D0 measurements of the W boson helicity in top quark decays |
| title_full_unstemmed | Combination of CDF and D0 measurements of the W boson helicity in top quark decays |
| title_short | Combination of CDF and D0 measurements of the W boson helicity in top quark decays |
| title_sort | combination of cdf and d0 measurements of the w boson helicity in top quark decays |
| url | http://hdl.handle.net/1721.1/71676 https://orcid.org/0000-0002-6047-4211 |
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