Measurements of the t[bar over t] charge asymmetry using the dilepton decay channel in pp collisions at √s = 7 TeV
The t[bar over t] charge asymmetry in proton-proton collisions at √s = 7 TeV is measured using the dilepton decay channel (ee, eμ, or μμ). The data correspond to a total integrated luminosity of 5.0 fb[superscript −1], collected by the CMS experiment at the LHC. The tt and lepton charge asymmetries,...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | en_US |
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Springer-Verlag
2014
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| Online Access: | http://hdl.handle.net/1721.1/88608 https://orcid.org/0000-0002-3831-9071 https://orcid.org/0000-0003-3106-4894 https://orcid.org/0000-0001-6332-5839 https://orcid.org/0000-0001-8983-2169 https://orcid.org/0000-0002-1260-777X https://orcid.org/0000-0002-6047-4211 https://orcid.org/0000-0002-7945-005X https://orcid.org/0000-0003-3681-0649 https://orcid.org/0000-0002-9418-6656 https://orcid.org/0000-0003-1486-606X https://orcid.org/0000-0003-2593-7767 https://orcid.org/0000-0001-9236-6621 https://orcid.org/0000-0002-0869-5631 https://orcid.org/0000-0002-1136-6900 |
| _version_ | 1826197754095861760 |
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| author | Apyan, Aram Busza, Wit Cali, Ivan Amos Chan, M. Di Matteo, Leonardo Gomez-Ceballos, Guillelmo Goncharov, Maxim Gulhan, Doga Can Klute, Markus Lai, Yue Shi Ma, Teng Paus, Christoph M. E. Ralph, Duncan Kelley Stephans, George S. F. Velicanu, Dragos Alexandru Veverka, Jan Wyslouch, Boleslaw Yoon, A. S. Zanetti, Marco Barbieri, Richard Alexander Dutta, Valentina Lee, Yen-Jie Luckey Jr, P David Roland, Christof E Sumorok, Konstanty C Yang, Mingming Wyslouch, Victoria Bauer, Gerry P Levin, Andrew Michael Roland, Gunther M Stoeckli, Fabian |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Apyan, Aram Busza, Wit Cali, Ivan Amos Chan, M. Di Matteo, Leonardo Gomez-Ceballos, Guillelmo Goncharov, Maxim Gulhan, Doga Can Klute, Markus Lai, Yue Shi Ma, Teng Paus, Christoph M. E. Ralph, Duncan Kelley Stephans, George S. F. Velicanu, Dragos Alexandru Veverka, Jan Wyslouch, Boleslaw Yoon, A. S. Zanetti, Marco Barbieri, Richard Alexander Dutta, Valentina Lee, Yen-Jie Luckey Jr, P David Roland, Christof E Sumorok, Konstanty C Yang, Mingming Wyslouch, Victoria Bauer, Gerry P Levin, Andrew Michael Roland, Gunther M Stoeckli, Fabian |
| author_sort | Apyan, Aram |
| collection | MIT |
| description | The t[bar over t] charge asymmetry in proton-proton collisions at √s = 7 TeV is measured using the dilepton decay channel (ee, eμ, or μμ). The data correspond to a total integrated luminosity of 5.0 fb[superscript −1], collected by the CMS experiment at the LHC. The tt and lepton charge asymmetries, defined as the differences in absolute values of the rapidities between the reconstructed top quarks and antiquarks and of the pseudorapidities between the positive and negative leptons, respectively, are measured to be A [subscript C] = −0.010 ± 0.017 (stat.) ± 0.008 (syst.) and A[lep over C] = 0.009 ± 0.010 (stat.) ± 0.006 (syst.). The lepton charge asymmetry is also measured as a function of the invariant mass, rapidity, and transverse momentum of the t[bar over t] system. All measurements are consistent with the expectations of the standard model. |
| first_indexed | 2024-09-23T10:52:37Z |
| format | Article |
| id | mit-1721.1/88608 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T10:52:37Z |
| publishDate | 2014 |
| publisher | Springer-Verlag |
| record_format | dspace |
| spelling | mit-1721.1/886082023-02-26T04:26:59Z Measurements of the t[bar over t] charge asymmetry using the dilepton decay channel in pp collisions at √s = 7 TeV Apyan, Aram Busza, Wit Cali, Ivan Amos Chan, M. Di Matteo, Leonardo Gomez-Ceballos, Guillelmo Goncharov, Maxim Gulhan, Doga Can Klute, Markus Lai, Yue Shi Ma, Teng Paus, Christoph M. E. Ralph, Duncan Kelley Stephans, George S. F. Velicanu, Dragos Alexandru Veverka, Jan Wyslouch, Boleslaw Yoon, A. S. Zanetti, Marco Barbieri, Richard Alexander Dutta, Valentina Lee, Yen-Jie Luckey Jr, P David Roland, Christof E Sumorok, Konstanty C Yang, Mingming Wyslouch, Victoria Bauer, Gerry P Levin, Andrew Michael Roland, Gunther M Stoeckli, Fabian Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Massachusetts Institute of Technology. School of Science Apyan, Aram Barbieri, R. Bauer, Gerry P. Busza, Wit Cali, Ivan Amos Chan, M. Di Matteo, Leonardo Dutta, V. Gomez-Ceballos, Guillelmo Goncharov, Maxim Gulhan, Doga Can Klute, Markus Lai, Yue Shi Lee, Y.-J. Levin, A. Luckey, P. David, Jr. Ma, Teng Paus, Christoph M. E. Ralph, Duncan Kelley Roland, Christof E. Roland, Gunther M. Stephans, George S. F. Stockli, Fabian Sumorok, Konstanty C. Velicanu, Dragos Alexandru Veverka, Jan Wyslouch, Boleslaw Yang, M. Yoon, A. S. Zanetti, Marco Zhukova, Victoria The t[bar over t] charge asymmetry in proton-proton collisions at √s = 7 TeV is measured using the dilepton decay channel (ee, eμ, or μμ). The data correspond to a total integrated luminosity of 5.0 fb[superscript −1], collected by the CMS experiment at the LHC. The tt and lepton charge asymmetries, defined as the differences in absolute values of the rapidities between the reconstructed top quarks and antiquarks and of the pseudorapidities between the positive and negative leptons, respectively, are measured to be A [subscript C] = −0.010 ± 0.017 (stat.) ± 0.008 (syst.) and A[lep over C] = 0.009 ± 0.010 (stat.) ± 0.006 (syst.). The lepton charge asymmetry is also measured as a function of the invariant mass, rapidity, and transverse momentum of the t[bar over t] system. All measurements are consistent with the expectations of the standard model. United States. Dept. of Energy National Science Foundation (U.S.) Alfred P. Sloan Foundation 2014-08-08T14:16:41Z 2014-08-08T14:16:41Z 2014-04 2014-03 Article http://purl.org/eprint/type/JournalArticle 1029-8479 1126-6708 http://hdl.handle.net/1721.1/88608 Chatrchyan, S., V. Khachatryan, A. M. Sirunyan, A. Tumasyan, W. Adam, T. Bergauer, M. Dragicevic, et al. “Measurements of the t[bar over t] charge asymmetry using the dilepton decay channel in pp collisions at √s = 7 TeV.” J. High Energ. Phys. 2014, no. 4 (April 2014). doi:10.1007/jhep04(2014)191. https://orcid.org/0000-0002-3831-9071 https://orcid.org/0000-0003-3106-4894 https://orcid.org/0000-0001-6332-5839 https://orcid.org/0000-0001-8983-2169 https://orcid.org/0000-0002-1260-777X https://orcid.org/0000-0002-6047-4211 https://orcid.org/0000-0002-7945-005X https://orcid.org/0000-0003-3681-0649 https://orcid.org/0000-0002-9418-6656 https://orcid.org/0000-0003-1486-606X https://orcid.org/0000-0003-2593-7767 https://orcid.org/0000-0001-9236-6621 https://orcid.org/0000-0002-0869-5631 https://orcid.org/0000-0002-1136-6900 en_US http://dx.doi.org/10.1007/jhep04(2014)191 Journal of High Energy Physics Creative Commons Attribution http://creativecommons.org/licenses/by/4.0/ application/pdf Springer-Verlag Springer-Verlag |
| spellingShingle | Apyan, Aram Busza, Wit Cali, Ivan Amos Chan, M. Di Matteo, Leonardo Gomez-Ceballos, Guillelmo Goncharov, Maxim Gulhan, Doga Can Klute, Markus Lai, Yue Shi Ma, Teng Paus, Christoph M. E. Ralph, Duncan Kelley Stephans, George S. F. Velicanu, Dragos Alexandru Veverka, Jan Wyslouch, Boleslaw Yoon, A. S. Zanetti, Marco Barbieri, Richard Alexander Dutta, Valentina Lee, Yen-Jie Luckey Jr, P David Roland, Christof E Sumorok, Konstanty C Yang, Mingming Wyslouch, Victoria Bauer, Gerry P Levin, Andrew Michael Roland, Gunther M Stoeckli, Fabian Measurements of the t[bar over t] charge asymmetry using the dilepton decay channel in pp collisions at √s = 7 TeV |
| title | Measurements of the t[bar over t] charge asymmetry using the dilepton decay channel in pp collisions at √s = 7 TeV |
| title_full | Measurements of the t[bar over t] charge asymmetry using the dilepton decay channel in pp collisions at √s = 7 TeV |
| title_fullStr | Measurements of the t[bar over t] charge asymmetry using the dilepton decay channel in pp collisions at √s = 7 TeV |
| title_full_unstemmed | Measurements of the t[bar over t] charge asymmetry using the dilepton decay channel in pp collisions at √s = 7 TeV |
| title_short | Measurements of the t[bar over t] charge asymmetry using the dilepton decay channel in pp collisions at √s = 7 TeV |
| title_sort | measurements of the t bar over t charge asymmetry using the dilepton decay channel in pp collisions at √s 7 tev |
| url | http://hdl.handle.net/1721.1/88608 https://orcid.org/0000-0002-3831-9071 https://orcid.org/0000-0003-3106-4894 https://orcid.org/0000-0001-6332-5839 https://orcid.org/0000-0001-8983-2169 https://orcid.org/0000-0002-1260-777X https://orcid.org/0000-0002-6047-4211 https://orcid.org/0000-0002-7945-005X https://orcid.org/0000-0003-3681-0649 https://orcid.org/0000-0002-9418-6656 https://orcid.org/0000-0003-1486-606X https://orcid.org/0000-0003-2593-7767 https://orcid.org/0000-0001-9236-6621 https://orcid.org/0000-0002-0869-5631 https://orcid.org/0000-0002-1136-6900 |
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