Search for resonant t[bar over t] production in proton-proton collisions at √s = 8 TeV
A search is performed for the production of heavy resonances decaying into top-antitop quark pairs in proton-proton collisions at √s = 8 TeV. Data used for the analyses were collected with the CMS detector and correspond to an integrated luminosity of 19.7 fb[superscript −1]. The search is perform...
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| author | Apyan, Aram Barbieri, Richard Alexander Baty, Austin Alan Bierwagen, Katharina Brandt, Stephanie Akemi Busza, Wit Cali, Ivan Amos Di Matteo, Leonardo Gomez-Ceballos, Guillelmo Goncharov, Maxim Gulhan, Doga Can Innocenti, Gian Michele Klute, Markus Kovalskyi, Dmytro Lai, Yue Shi Lee, Yen-Jie Levin, Andrew Michael McGinn, Christopher Francis Niu, Xinmei Paus, Christoph M. E. Ralph, Duncan Kelley Stephans, George S. F. Velicanu, Dragos Alexandru Veverka, Jan Wang, J. Wang, Ta-Wei Wyslouch, Boleslaw Yang, Mingming Luckey Jr, P David Roland, Christof E Roland, Gunther M Sumorok, Konstanty C Varma, Mukund Madhav Wyslouch, Victoria |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Apyan, Aram Barbieri, Richard Alexander Baty, Austin Alan Bierwagen, Katharina Brandt, Stephanie Akemi Busza, Wit Cali, Ivan Amos Di Matteo, Leonardo Gomez-Ceballos, Guillelmo Goncharov, Maxim Gulhan, Doga Can Innocenti, Gian Michele Klute, Markus Kovalskyi, Dmytro Lai, Yue Shi Lee, Yen-Jie Levin, Andrew Michael McGinn, Christopher Francis Niu, Xinmei Paus, Christoph M. E. Ralph, Duncan Kelley Stephans, George S. F. Velicanu, Dragos Alexandru Veverka, Jan Wang, J. Wang, Ta-Wei Wyslouch, Boleslaw Yang, Mingming Luckey Jr, P David Roland, Christof E Roland, Gunther M Sumorok, Konstanty C Varma, Mukund Madhav Wyslouch, Victoria |
| author_sort | Apyan, Aram |
| collection | MIT |
| description | A search is performed for the production of heavy resonances decaying into top-antitop quark pairs in proton-proton collisions at √s = 8 TeV. Data used for the analyses were collected with the CMS detector and correspond to an integrated luminosity of 19.7 fb[superscript −1]. The search is performed using events with three different final states, defined by the number of leptons (electrons and muons) from the t[bar over t] → WbWb decay. The analyses are optimized for reconstruction of top quarks with high Lorentz boosts, where jet substructure techniques are used to enhance the sensitivity. Results are presented for all channels and a combination is performed. No significant excess of events relative to the expected yield from standard model processes is observed. Upper limits on the production cross section of heavy resonances decaying to t[bar over t] are calculated. A narrow leptophobic topcolor Z′ resonance with a mass below 2.4 TeV is excluded at 95% confidence level. Limits are also derived for a broad Z′ resonance with a 10% width relative to the resonance mass, and a Kaluza-Klein excitation of the gluon in the Randall-Sundrum model. These are the most stringent limits to date on heavy resonances decaying into top-antitop quark pairs. |
| first_indexed | 2024-09-23T16:49:01Z |
| format | Article |
| id | mit-1721.1/101611 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T16:49:01Z |
| publishDate | 2016 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/1016112023-02-26T06:03:47Z Search for resonant t[bar over t] production in proton-proton collisions at √s = 8 TeV Apyan, Aram Barbieri, Richard Alexander Baty, Austin Alan Bierwagen, Katharina Brandt, Stephanie Akemi Busza, Wit Cali, Ivan Amos Di Matteo, Leonardo Gomez-Ceballos, Guillelmo Goncharov, Maxim Gulhan, Doga Can Innocenti, Gian Michele Klute, Markus Kovalskyi, Dmytro Lai, Yue Shi Lee, Yen-Jie Levin, Andrew Michael McGinn, Christopher Francis Niu, Xinmei Paus, Christoph M. E. Ralph, Duncan Kelley Stephans, George S. F. Velicanu, Dragos Alexandru Veverka, Jan Wang, J. Wang, Ta-Wei Wyslouch, Boleslaw Yang, Mingming Luckey Jr, P David Roland, Christof E Roland, Gunther M Sumorok, Konstanty C Varma, Mukund Madhav Wyslouch, Victoria 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, Richard Alexander Baty, Austin Alan Bierwagen, Katharina Brandt, Stephanie Akemi Busza, Wit Cali, Ivan Amos Di Matteo, Leonardo Gomez-Ceballos, Guillelmo Goncharov, Maxim Gulhan, Doga Can Innocenti, Gian Michele Klute, Markus Kovalskyi, Dmytro Lai, Yue Shi Lee, Yen-Jie Levin, Andrew Michael Luckey, P. David, Jr. McGinn, Christopher Francis Niu, Xinmei Paus, Christoph M. E. Ralph, Duncan Kelley Roland, Christof E. Roland, Gunther M. Stephans, George S. F. Sumorok, Konstanty C. Varma, Mukund Velicanu, Dragos Alexandru Veverka, Jan Wang, J. Wang, Ta-Wei Wyslouch, Boleslaw Yang, Mingming Zhukova, Victoria A search is performed for the production of heavy resonances decaying into top-antitop quark pairs in proton-proton collisions at √s = 8 TeV. Data used for the analyses were collected with the CMS detector and correspond to an integrated luminosity of 19.7 fb[superscript −1]. The search is performed using events with three different final states, defined by the number of leptons (electrons and muons) from the t[bar over t] → WbWb decay. The analyses are optimized for reconstruction of top quarks with high Lorentz boosts, where jet substructure techniques are used to enhance the sensitivity. Results are presented for all channels and a combination is performed. No significant excess of events relative to the expected yield from standard model processes is observed. Upper limits on the production cross section of heavy resonances decaying to t[bar over t] are calculated. A narrow leptophobic topcolor Z′ resonance with a mass below 2.4 TeV is excluded at 95% confidence level. Limits are also derived for a broad Z′ resonance with a 10% width relative to the resonance mass, and a Kaluza-Klein excitation of the gluon in the Randall-Sundrum model. These are the most stringent limits to date on heavy resonances decaying into top-antitop quark pairs. United States. Dept. of Energy National Science Foundation (U.S.) Alfred P. Sloan Foundation 2016-03-07T15:17:24Z 2016-03-07T15:17:24Z 2016-01 2015-06 Article http://purl.org/eprint/type/JournalArticle 2470-0010 2470-0029 http://hdl.handle.net/1721.1/101611 Khachatryan, V., A. M. Sirunyan, A. Tumasyan, W. Adam, E. Asilar, T. Bergauer, J. Brandstetter, et al. “Search for Resonant t[bar over t] Production in Proton-Proton Collisions at √s = 8 TeV.” Phys. Rev. D 93, no. 1 (January 8, 2016). © 2016 CERN, for the CMS Collaboration https://orcid.org/0000-0002-3831-9071 https://orcid.org/0000-0001-8261-8346 https://orcid.org/0000-0003-3106-4894 https://orcid.org/0000-0001-7842-1591 https://orcid.org/0000-0002-8590-2673 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/0000-0001-5310-3466 https://orcid.org/0000-0003-4511-0855 https://orcid.org/0000-0002-9418-6656 https://orcid.org/0000-0003-1486-606X https://orcid.org/0000-0003-1281-0193 https://orcid.org/0000-0002-2622-8295 https://orcid.org/0000-0001-9236-6621 https://orcid.org/0000-0003-2593-7767 https://orcid.org/0000-0002-0899-7621 https://orcid.org/0000-0002-0869-5631 https://orcid.org/0000-0002-1136-6900 en_US http://dx.doi.org/10.1103/PhysRevD.93.012001 Physical Review D Creative Commons Attribution http://creativecommons.org/licenses/by/3.0/ application/pdf American Physical Society American Physical Society |
| spellingShingle | Apyan, Aram Barbieri, Richard Alexander Baty, Austin Alan Bierwagen, Katharina Brandt, Stephanie Akemi Busza, Wit Cali, Ivan Amos Di Matteo, Leonardo Gomez-Ceballos, Guillelmo Goncharov, Maxim Gulhan, Doga Can Innocenti, Gian Michele Klute, Markus Kovalskyi, Dmytro Lai, Yue Shi Lee, Yen-Jie Levin, Andrew Michael McGinn, Christopher Francis Niu, Xinmei Paus, Christoph M. E. Ralph, Duncan Kelley Stephans, George S. F. Velicanu, Dragos Alexandru Veverka, Jan Wang, J. Wang, Ta-Wei Wyslouch, Boleslaw Yang, Mingming Luckey Jr, P David Roland, Christof E Roland, Gunther M Sumorok, Konstanty C Varma, Mukund Madhav Wyslouch, Victoria Search for resonant t[bar over t] production in proton-proton collisions at √s = 8 TeV |
| title | Search for resonant t[bar over t] production in proton-proton collisions at √s = 8 TeV |
| title_full | Search for resonant t[bar over t] production in proton-proton collisions at √s = 8 TeV |
| title_fullStr | Search for resonant t[bar over t] production in proton-proton collisions at √s = 8 TeV |
| title_full_unstemmed | Search for resonant t[bar over t] production in proton-proton collisions at √s = 8 TeV |
| title_short | Search for resonant t[bar over t] production in proton-proton collisions at √s = 8 TeV |
| title_sort | search for resonant t bar over t production in proton proton collisions at √s 8 tev |
| url | http://hdl.handle.net/1721.1/101611 https://orcid.org/0000-0002-3831-9071 https://orcid.org/0000-0001-8261-8346 https://orcid.org/0000-0003-3106-4894 https://orcid.org/0000-0001-7842-1591 https://orcid.org/0000-0002-8590-2673 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/0000-0001-5310-3466 https://orcid.org/0000-0003-4511-0855 https://orcid.org/0000-0002-9418-6656 https://orcid.org/0000-0003-1486-606X https://orcid.org/0000-0003-1281-0193 https://orcid.org/0000-0002-2622-8295 https://orcid.org/0000-0001-9236-6621 https://orcid.org/0000-0003-2593-7767 https://orcid.org/0000-0002-0899-7621 https://orcid.org/0000-0002-0869-5631 https://orcid.org/0000-0002-1136-6900 |
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