Measurement of the W-boson helicity in top-quark decays from t[overline t] production in lepton+jets events in pp collisions at √s =7 TeV
The W-boson helicity fractions in top-quark decays are measured with tt̄ events in the lepton+jets final state, using proton-proton collisions at a centre-of-mass energy of 7TeV, collected in 2011 with the CMS detector at the LHC. The data sample corresponds to an integrated luminosity of 5.0 fb [su...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Article |
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Springer Berlin Heidelberg
2018
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| Online Access: | http://hdl.handle.net/1721.1/116055 https://orcid.org/0000-0002-9418-6656 https://orcid.org/0000-0002-3831-9071 https://orcid.org/0000-0001-9236-6621 https://orcid.org/0000-0002-0869-5631 https://orcid.org/0000-0003-1486-606X https://orcid.org/0000-0002-6047-4211 https://orcid.org/0000-0001-8983-2169 https://orcid.org/0000-0003-3106-4894 https://orcid.org/0000-0002-1260-777X https://orcid.org/0000-0003-3681-0649 https://orcid.org/0000-0002-2850-9007 |
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| author | CMS Collaboration Apyan, Aram Bauer, Gerry P Busza, Wit Cali, Ivan Amos Di Matteo, Leonardo Dutta, Valentina Gomez-Ceballos, Guillelmo Goncharov, Maxim Gulhan, Doga Can Klute, Markus Lai, Yue Shi Levin, Amy Elizabeth Luckey Jr, P David Ma, Teng Nahn, Steven Paus, Christoph M. E. Ralph, Duncan Kelley Roland, Christof E Roland, Gunther M Stephans, George S. F. Stoeckli, Fabian Sumorok, Konstanty C Velicanu, Dragos Alexandru Wolf, Roger Wyslouch, Boleslaw Yang, Ming Yilmaz, Yetkin Yoon, A. S. Zanetti, Marco Wyslouch, Victoria Chan, M. Kim, Y. |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics CMS Collaboration Apyan, Aram Bauer, Gerry P Busza, Wit Cali, Ivan Amos Di Matteo, Leonardo Dutta, Valentina Gomez-Ceballos, Guillelmo Goncharov, Maxim Gulhan, Doga Can Klute, Markus Lai, Yue Shi Levin, Amy Elizabeth Luckey Jr, P David Ma, Teng Nahn, Steven Paus, Christoph M. E. Ralph, Duncan Kelley Roland, Christof E Roland, Gunther M Stephans, George S. F. Stoeckli, Fabian Sumorok, Konstanty C Velicanu, Dragos Alexandru Wolf, Roger Wyslouch, Boleslaw Yang, Ming Yilmaz, Yetkin Yoon, A. S. Zanetti, Marco Wyslouch, Victoria Chan, M. Kim, Y. |
| author_sort | CMS Collaboration |
| collection | MIT |
| description | The W-boson helicity fractions in top-quark decays are measured with tt̄ events in the lepton+jets final state, using proton-proton collisions at a centre-of-mass energy of 7TeV, collected in 2011 with the CMS detector at the LHC. The data sample corresponds to an integrated luminosity of 5.0 fb [superscript -1]. The measured fractions of longitudinal, left-, and right-handed helicity are F0 = 0:682±0:030 (stat.)± 0:033 (syst.), F= 0:310 ±0:022 (stat.)± 0:022 (syst.), and F= 0:008± 0:012 (stat.) ± 0:014 (syst.), consistent with the standard model predictions. The measured fractions are used to probe the existence of anomalous Wtb couplings. Exclusion limits on the real components of the anomalous couplings gL; gR are also derived. Keywords: Hadron-Hadron Scattering; Top physics |
| first_indexed | 2024-09-23T15:04:35Z |
| format | Article |
| id | mit-1721.1/116055 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T15:04:35Z |
| publishDate | 2018 |
| publisher | Springer Berlin Heidelberg |
| record_format | dspace |
| spelling | mit-1721.1/1160552023-02-26T11:37:48Z Measurement of the W-boson helicity in top-quark decays from t[overline t] production in lepton+jets events in pp collisions at √s =7 TeV CMS Collaboration Apyan, Aram Bauer, Gerry P Busza, Wit Cali, Ivan Amos Di Matteo, Leonardo Dutta, Valentina Gomez-Ceballos, Guillelmo Goncharov, Maxim Gulhan, Doga Can Klute, Markus Lai, Yue Shi Levin, Amy Elizabeth Luckey Jr, P David Ma, Teng Nahn, Steven Paus, Christoph M. E. Ralph, Duncan Kelley Roland, Christof E Roland, Gunther M Stephans, George S. F. Stoeckli, Fabian Sumorok, Konstanty C Velicanu, Dragos Alexandru Wolf, Roger Wyslouch, Boleslaw Yang, Ming Yilmaz, Yetkin Yoon, A. S. Zanetti, Marco Wyslouch, Victoria Chan, M. Kim, Y. Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Apyan, Aram Bauer, Gerry P Busza, Wit Cali, Ivan Amos Chan, Matthew Hans Di Matteo, Leonardo Dutta, Valentina Gomez-Ceballos, Guillelmo Goncharov, Maxim Gulhan, Doga Can Kim, Yongsun Klute, Markus Lai, Yue Shi Levin, Amy Elizabeth Luckey Jr, P David Ma, Teng Nahn, Steven Paus, Christoph M. E. Ralph, Duncan Kelley Roland, Christof E Roland, Gunther M Stephans, George S. F. Stoeckli, Fabian Sumorok, Konstanty C Velicanu, Dragos Alexandru Wolf, Roger Wyslouch, Boleslaw Yang, Ming Yilmaz, Yetkin Yoon, A. S. Zanetti, Marco Wyslouch, Victoria The W-boson helicity fractions in top-quark decays are measured with tt̄ events in the lepton+jets final state, using proton-proton collisions at a centre-of-mass energy of 7TeV, collected in 2011 with the CMS detector at the LHC. The data sample corresponds to an integrated luminosity of 5.0 fb [superscript -1]. The measured fractions of longitudinal, left-, and right-handed helicity are F0 = 0:682±0:030 (stat.)± 0:033 (syst.), F= 0:310 ±0:022 (stat.)± 0:022 (syst.), and F= 0:008± 0:012 (stat.) ± 0:014 (syst.), consistent with the standard model predictions. The measured fractions are used to probe the existence of anomalous Wtb couplings. Exclusion limits on the real components of the anomalous couplings gL; gR are also derived. Keywords: Hadron-Hadron Scattering; Top physics 2018-06-04T15:56:31Z 2018-06-04T15:56:31Z 2013-10 2013-08 2018-06-01T17:11:38Z Article http://purl.org/eprint/type/JournalArticle 1029-8479 http://hdl.handle.net/1721.1/116055 Chatrchyan, S. et al. “Measurement of the W-boson helicity in top-quark decays from t[overline t] production in lepton+jets events in pp collisions at √s =7 TeV.” Journal of High Energy Physics 2013, 10 (October 2013): 167 © 2013 CERN for the benefit of the CMS collaboration https://orcid.org/0000-0002-9418-6656 https://orcid.org/0000-0002-3831-9071 https://orcid.org/0000-0001-9236-6621 https://orcid.org/0000-0002-0869-5631 https://orcid.org/0000-0003-1486-606X https://orcid.org/0000-0002-6047-4211 https://orcid.org/0000-0001-8983-2169 https://orcid.org/0000-0003-3106-4894 https://orcid.org/0000-0002-1260-777X https://orcid.org/0000-0003-3681-0649 https://orcid.org/0000-0002-2850-9007 http://dx.doi.org/10.1007/JHEP10(2013)167 Journal of High Energy Physics Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/ application/pdf Springer Berlin Heidelberg Journal of High Energy Physics |
| spellingShingle | CMS Collaboration Apyan, Aram Bauer, Gerry P Busza, Wit Cali, Ivan Amos Di Matteo, Leonardo Dutta, Valentina Gomez-Ceballos, Guillelmo Goncharov, Maxim Gulhan, Doga Can Klute, Markus Lai, Yue Shi Levin, Amy Elizabeth Luckey Jr, P David Ma, Teng Nahn, Steven Paus, Christoph M. E. Ralph, Duncan Kelley Roland, Christof E Roland, Gunther M Stephans, George S. F. Stoeckli, Fabian Sumorok, Konstanty C Velicanu, Dragos Alexandru Wolf, Roger Wyslouch, Boleslaw Yang, Ming Yilmaz, Yetkin Yoon, A. S. Zanetti, Marco Wyslouch, Victoria Chan, M. Kim, Y. Measurement of the W-boson helicity in top-quark decays from t[overline t] production in lepton+jets events in pp collisions at √s =7 TeV |
| title | Measurement of the W-boson helicity in top-quark decays from t[overline t] production in lepton+jets events in pp collisions at √s =7 TeV |
| title_full | Measurement of the W-boson helicity in top-quark decays from t[overline t] production in lepton+jets events in pp collisions at √s =7 TeV |
| title_fullStr | Measurement of the W-boson helicity in top-quark decays from t[overline t] production in lepton+jets events in pp collisions at √s =7 TeV |
| title_full_unstemmed | Measurement of the W-boson helicity in top-quark decays from t[overline t] production in lepton+jets events in pp collisions at √s =7 TeV |
| title_short | Measurement of the W-boson helicity in top-quark decays from t[overline t] production in lepton+jets events in pp collisions at √s =7 TeV |
| title_sort | measurement of the w boson helicity in top quark decays from t overline t production in lepton jets events in pp collisions at √s 7 tev |
| url | http://hdl.handle.net/1721.1/116055 https://orcid.org/0000-0002-9418-6656 https://orcid.org/0000-0002-3831-9071 https://orcid.org/0000-0001-9236-6621 https://orcid.org/0000-0002-0869-5631 https://orcid.org/0000-0003-1486-606X https://orcid.org/0000-0002-6047-4211 https://orcid.org/0000-0001-8983-2169 https://orcid.org/0000-0003-3106-4894 https://orcid.org/0000-0002-1260-777X https://orcid.org/0000-0003-3681-0649 https://orcid.org/0000-0002-2850-9007 |
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