Inclusive and Differential Measurements of the t t ¯ Charge Asymmetry in Pp Collisions at √s = 8 TeV
The tt¯ charge asymmetry is measured in proton–proton collisions at a centre-of-mass energy of 8 TeV. The data, collected with the CMS experiment at the LHC, correspond to an integrated luminosity of 19.7 fb[superscript −1]. Selected events contain an electron or a muon and four or more jets, where...
| _version_ | 1826197280626049024 |
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| author | CMS Collaboration Apyan, Aram Barbieri, Richard Alexander Baty, Austin Alan Bierwagen, Katharina Brandt, Stephanie Akemi Busza, Wit Cali, Ivan Amos Demiragli, Zeynep Di Matteo, Leonardo Gomez-Ceballos, Guillelmo Goncharov, Maxim Gulhan, Doga Can Innocenti, Gian Michele Klute, Markus Kovalskyi, Dmytro Lai, Yue Shi Lee, Young-Jin Levin, Andrew Michael Luckey Jr, P David McGinn, Christopher Francis Mironov, Camelia Maria Niu, Xinmei Paus, Christoph M. E. Ralph, Duncan Kelley Roland, Christof E Roland, Gunther M Salfeld-Nebgen, Jakob Maxillian Henry Stephans, George S. F. Sumorok, Konstanty C Varma, Mukund Madhav Velicanu, Dragos Alexandru Veverka, Jan Wang, Jing Wang, Ta-Wei Wyslouch, Boleslaw Yang, Mingming Wyslouch, Victoria |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics CMS Collaboration Apyan, Aram Barbieri, Richard Alexander Baty, Austin Alan Bierwagen, Katharina Brandt, Stephanie Akemi Busza, Wit Cali, Ivan Amos Demiragli, Zeynep Di Matteo, Leonardo Gomez-Ceballos, Guillelmo Goncharov, Maxim Gulhan, Doga Can Innocenti, Gian Michele Klute, Markus Kovalskyi, Dmytro Lai, Yue Shi Lee, Young-Jin Levin, Andrew Michael Luckey Jr, P David McGinn, Christopher Francis Mironov, Camelia Maria Niu, Xinmei Paus, Christoph M. E. Ralph, Duncan Kelley Roland, Christof E Roland, Gunther M Salfeld-Nebgen, Jakob Maxillian Henry Stephans, George S. F. Sumorok, Konstanty C Varma, Mukund Madhav Velicanu, Dragos Alexandru Veverka, Jan Wang, Jing Wang, Ta-Wei Wyslouch, Boleslaw Yang, Mingming Wyslouch, Victoria |
| author_sort | CMS Collaboration |
| collection | MIT |
| description | The tt¯ charge asymmetry is measured in proton–proton collisions at a centre-of-mass energy of 8 TeV. The data, collected with the CMS experiment at the LHC, correspond to an integrated luminosity of 19.7 fb[superscript −1]. Selected events contain an electron or a muon and four or more jets, where at least one jet is identified as originating from b-quark hadronization. The inclusive charge asymmetry is found to be 0.0010±0.0068 (stat)±0.0037 (syst). In addition, differential charge asymmetries as a function of rapidity, transverse momentum, and invariant mass of the tt¯ system are studied. For the first time at the LHC, the measurements are also performed in a reduced fiducial phase space of top quark pair production, with an integrated result of −0.0035±0.0072 (stat)±0.0031 (syst). All measurements are consistent within two standard deviations with zero asymmetry as well as with the predictions of the standard model. |
| first_indexed | 2024-09-23T10:45:16Z |
| format | Article |
| id | mit-1721.1/116168 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T10:45:16Z |
| publishDate | 2018 |
| publisher | Elsevier BV |
| record_format | dspace |
| spelling | mit-1721.1/1161682022-09-27T14:46:43Z Inclusive and Differential Measurements of the t t ¯ Charge Asymmetry in Pp Collisions at √s = 8 TeV CMS Collaboration Apyan, Aram Barbieri, Richard Alexander Baty, Austin Alan Bierwagen, Katharina Brandt, Stephanie Akemi Busza, Wit Cali, Ivan Amos Demiragli, Zeynep Di Matteo, Leonardo Gomez-Ceballos, Guillelmo Goncharov, Maxim Gulhan, Doga Can Innocenti, Gian Michele Klute, Markus Kovalskyi, Dmytro Lai, Yue Shi Lee, Young-Jin Levin, Andrew Michael Luckey Jr, P David McGinn, Christopher Francis Mironov, Camelia Maria Niu, Xinmei Paus, Christoph M. E. Ralph, Duncan Kelley Roland, Christof E Roland, Gunther M Salfeld-Nebgen, Jakob Maxillian Henry Stephans, George S. F. Sumorok, Konstanty C Varma, Mukund Madhav Velicanu, Dragos Alexandru Veverka, Jan Wang, Jing Wang, Ta-Wei Wyslouch, Boleslaw Yang, Mingming Wyslouch, Victoria Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Apyan, Aram Barbieri, Richard Alexander Baty, Austin Alan Bierwagen, Katharina Brandt, Stephanie Akemi Busza, Wit Cali, Ivan Amos Demiragli, Zeynep Di Matteo, Leonardo Gomez-Ceballos, Guillelmo Goncharov, Maxim Gulhan, Doga Can Innocenti, Gian Michele Klute, Markus Kovalskyi, Dmytro Lai, Yue Shi Lee, Young-Jin Levin, Andrew Michael Luckey Jr, P David McGinn, Christopher Francis Mironov, Camelia Maria Niu, Xinmei Paus, Christoph M. E. Ralph, Duncan Kelley Roland, Christof E Roland, Gunther M Salfeld-Nebgen, Jakob Maxillian Henry Stephans, George S. F. Sumorok, Konstanty C Varma, Mukund Madhav Velicanu, Dragos Alexandru Veverka, Jan Wang, Jing Wang, Ta-Wei Wyslouch, Boleslaw Yang, Mingming Wyslouch, Victoria The tt¯ charge asymmetry is measured in proton–proton collisions at a centre-of-mass energy of 8 TeV. The data, collected with the CMS experiment at the LHC, correspond to an integrated luminosity of 19.7 fb[superscript −1]. Selected events contain an electron or a muon and four or more jets, where at least one jet is identified as originating from b-quark hadronization. The inclusive charge asymmetry is found to be 0.0010±0.0068 (stat)±0.0037 (syst). In addition, differential charge asymmetries as a function of rapidity, transverse momentum, and invariant mass of the tt¯ system are studied. For the first time at the LHC, the measurements are also performed in a reduced fiducial phase space of top quark pair production, with an integrated result of −0.0035±0.0072 (stat)±0.0031 (syst). All measurements are consistent within two standard deviations with zero asymmetry as well as with the predictions of the standard model. 2018-06-07T13:55:58Z 2018-06-07T13:55:58Z 2016-03 2016-02 2018-05-01T14:06:28Z Article http://purl.org/eprint/type/JournalArticle 0370-2693 http://hdl.handle.net/1721.1/116168 Khachatryan, V. et al. “Inclusive and Differential Measurements of the t t ¯ Charge Asymmetry in Pp Collisions at √s = 8 TeV.” Physics Letters B 757 (June 2016): 154–179 © 2016 CERN for the benefit of the CMS Collaboration https://orcid.org/0000-0002-9418-6656 https://orcid.org/0000-0002-7945-005X https://orcid.org/0000-0001-5310-3466 https://orcid.org/0000-0002-2622-8295 https://orcid.org/0000-0002-8590-2673 https://orcid.org/0000-0002-3831-9071 https://orcid.org/0000-0002-2822-3375 https://orcid.org/0000-0001-8521-737X https://orcid.org/0000-0001-9236-6621 https://orcid.org/0000-0003-4511-0855 https://orcid.org/0000-0002-0869-5631 https://orcid.org/0000-0002-6923-293X https://orcid.org/0000-0003-1486-606X https://orcid.org/0000-0002-1136-6900 https://orcid.org/0000-0003-1281-0193 https://orcid.org/0000-0002-8599-2437 https://orcid.org/0000-0001-7842-1591 https://orcid.org/0000-0002-6047-4211 https://orcid.org/0000-0001-8983-2169 https://orcid.org/0000-0003-3879-5622 https://orcid.org/0000-0003-3106-4894 https://orcid.org/0000-0001-8261-8346 https://orcid.org/0000-0002-1260-777X https://orcid.org/0000-0001-5259-1883 https://orcid.org/0000-0002-0899-7621 https://orcid.org/0000-0003-3681-0649 https://orcid.org/0000-0001-6332-5839 http://dx.doi.org/10.1016/J.PHYSLETB.2016.03.060 Physics Letters B Creative Commons Attribution 4.0 International License http://creativecommons.org/licenses/by/4.0/ application/pdf Elsevier BV Elsevier |
| spellingShingle | CMS Collaboration Apyan, Aram Barbieri, Richard Alexander Baty, Austin Alan Bierwagen, Katharina Brandt, Stephanie Akemi Busza, Wit Cali, Ivan Amos Demiragli, Zeynep Di Matteo, Leonardo Gomez-Ceballos, Guillelmo Goncharov, Maxim Gulhan, Doga Can Innocenti, Gian Michele Klute, Markus Kovalskyi, Dmytro Lai, Yue Shi Lee, Young-Jin Levin, Andrew Michael Luckey Jr, P David McGinn, Christopher Francis Mironov, Camelia Maria Niu, Xinmei Paus, Christoph M. E. Ralph, Duncan Kelley Roland, Christof E Roland, Gunther M Salfeld-Nebgen, Jakob Maxillian Henry Stephans, George S. F. Sumorok, Konstanty C Varma, Mukund Madhav Velicanu, Dragos Alexandru Veverka, Jan Wang, Jing Wang, Ta-Wei Wyslouch, Boleslaw Yang, Mingming Wyslouch, Victoria Inclusive and Differential Measurements of the t t ¯ Charge Asymmetry in Pp Collisions at √s = 8 TeV |
| title | Inclusive and Differential Measurements of the t t ¯ Charge Asymmetry in Pp Collisions at √s = 8 TeV |
| title_full | Inclusive and Differential Measurements of the t t ¯ Charge Asymmetry in Pp Collisions at √s = 8 TeV |
| title_fullStr | Inclusive and Differential Measurements of the t t ¯ Charge Asymmetry in Pp Collisions at √s = 8 TeV |
| title_full_unstemmed | Inclusive and Differential Measurements of the t t ¯ Charge Asymmetry in Pp Collisions at √s = 8 TeV |
| title_short | Inclusive and Differential Measurements of the t t ¯ Charge Asymmetry in Pp Collisions at √s = 8 TeV |
| title_sort | inclusive and differential measurements of the t t ¯ charge asymmetry in pp collisions at √s 8 tev |
| url | http://hdl.handle.net/1721.1/116168 https://orcid.org/0000-0002-9418-6656 https://orcid.org/0000-0002-7945-005X https://orcid.org/0000-0001-5310-3466 https://orcid.org/0000-0002-2622-8295 https://orcid.org/0000-0002-8590-2673 https://orcid.org/0000-0002-3831-9071 https://orcid.org/0000-0002-2822-3375 https://orcid.org/0000-0001-8521-737X https://orcid.org/0000-0001-9236-6621 https://orcid.org/0000-0003-4511-0855 https://orcid.org/0000-0002-0869-5631 https://orcid.org/0000-0002-6923-293X https://orcid.org/0000-0003-1486-606X https://orcid.org/0000-0002-1136-6900 https://orcid.org/0000-0003-1281-0193 https://orcid.org/0000-0002-8599-2437 https://orcid.org/0000-0001-7842-1591 https://orcid.org/0000-0002-6047-4211 https://orcid.org/0000-0001-8983-2169 https://orcid.org/0000-0003-3879-5622 https://orcid.org/0000-0003-3106-4894 https://orcid.org/0000-0001-8261-8346 https://orcid.org/0000-0002-1260-777X https://orcid.org/0000-0001-5259-1883 https://orcid.org/0000-0002-0899-7621 https://orcid.org/0000-0003-3681-0649 https://orcid.org/0000-0001-6332-5839 |
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