Search for pair-produced vectorlike B quarks in proton-proton collisions at √s = 8 TeV
A search for the production of a heavy B quark, having electric charge −13 and vector couplings to W, Z, and H bosons, is carried out using proton-proton collision data recorded at the CERN LHC by the CMS experiment, corresponding to an integrated luminosity of 19.7 fb[superscript −1]. The B quark i...
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| author | 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, Yen-Jie Levin, Andrew Michael Luckey Jr, P David 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 Madhav Velicanu, Dragos Alexandru Veverka, Jan Wang, J. 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 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, Yen-Jie Levin, Andrew Michael Luckey Jr, P David 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 Madhav Velicanu, Dragos Alexandru Veverka, Jan Wang, J. Wang, Ta-Wei Wyslouch, Boleslaw Yang, Mingming Wyslouch, Victoria |
| author_sort | Apyan, Aram |
| collection | MIT |
| description | A search for the production of a heavy B quark, having electric charge −13 and vector couplings to W, Z, and H bosons, is carried out using proton-proton collision data recorded at the CERN LHC by the CMS experiment, corresponding to an integrated luminosity of 19.7 fb[superscript −1]. The B quark is assumed to be pair produced and to decay in one of three ways: to
tW, bZ, or bH. The search is carried out in final states with one, two, and more than two charged leptons, as well as in fully hadronic final states. Each of the channels in the exclusive final-state topologies is designed to be sensitive to specific combinations of the B quark-antiquark pair decays. The observed event yields are found to be consistent with the standard model expectations in all the final states studied. A statistical combination of these results is performed, and upper limits are set on the cross section of the strongly produced B quark-antiquark pairs as a function of the B quark mass. Lower limits on the B quark mass between 740 and 900 GeV are set at a 95% confidence level, depending on the values of the branching fractions of the B quark to tW, bZ, and bH. Overall, these limits are the most stringent to date. |
| first_indexed | 2024-09-23T17:07:51Z |
| format | Article |
| id | mit-1721.1/106854 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T17:07:51Z |
| publishDate | 2017 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/1068542022-10-03T10:39:03Z Search for pair-produced vectorlike B quarks 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 Demiragli, Zeynep 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 Jr, P David 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 Madhav Velicanu, Dragos Alexandru Veverka, Jan Wang, J. 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, Yen-Jie Levin, Andrew Michael Luckey Jr, P David 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 Madhav Velicanu, Dragos Alexandru Veverka, Jan Wang, J. Wang, Ta-Wei Wyslouch, Boleslaw Yang, Mingming Wyslouch, Victoria A search for the production of a heavy B quark, having electric charge −13 and vector couplings to W, Z, and H bosons, is carried out using proton-proton collision data recorded at the CERN LHC by the CMS experiment, corresponding to an integrated luminosity of 19.7 fb[superscript −1]. The B quark is assumed to be pair produced and to decay in one of three ways: to tW, bZ, or bH. The search is carried out in final states with one, two, and more than two charged leptons, as well as in fully hadronic final states. Each of the channels in the exclusive final-state topologies is designed to be sensitive to specific combinations of the B quark-antiquark pair decays. The observed event yields are found to be consistent with the standard model expectations in all the final states studied. A statistical combination of these results is performed, and upper limits are set on the cross section of the strongly produced B quark-antiquark pairs as a function of the B quark mass. Lower limits on the B quark mass between 740 and 900 GeV are set at a 95% confidence level, depending on the values of the branching fractions of the B quark to tW, bZ, and bH. Overall, these limits are the most stringent to date. United States. Dept. of Energy Massachusetts Institute of Technology. Laboratory for Nuclear Science 2017-02-03T18:55:20Z 2017-02-03T18:55:20Z 2016-06 2015-06 Article http://purl.org/eprint/type/JournalArticle 2470-0010 2470-0029 http://hdl.handle.net/1721.1/106854 Khachatryan, V. et al. “Search for Pair-Produced Vectorlike B Quarks in Proton-Proton Collisions at √s = 8 TeV.” Physical Review D 93.11 (2016): n. pag. © 2016 CERN for 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/0000-0001-8521-737X https://orcid.org/0000-0001-9236-6621 https://orcid.org/0000-0003-4511-0855 https://orcid.org/0000-0002-0869-5631 https://orcid.org/0000-0003-1486-606X https://orcid.org/0000-0003-2593-7767 https://orcid.org/0000-0002-1136-6900 https://orcid.org/0000-0003-1281-0193 https://orcid.org/0000-0001-7842-1591 https://orcid.org/0000-0002-6047-4211 https://orcid.org/0000-0001-8983-2169 https://orcid.org/0000-0003-3106-4894 https://orcid.org/0000-0001-8261-8346 https://orcid.org/0000-0002-1260-777X https://orcid.org/0000-0002-0899-7621 https://orcid.org/0000-0003-3681-0649 https://orcid.org/0000-0001-6332-5839 en_US http://dx.doi.org/10.1103/PhysRevD.93.112009 Physical Review D Creative Commons Attribution 3.0 Unported licence http://creativecommons.org/licenses/by/3.0/ application/pdf American Physical Society APS |
| spellingShingle | 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, Yen-Jie Levin, Andrew Michael Luckey Jr, P David 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 Madhav Velicanu, Dragos Alexandru Veverka, Jan Wang, J. Wang, Ta-Wei Wyslouch, Boleslaw Yang, Mingming Wyslouch, Victoria Search for pair-produced vectorlike B quarks in proton-proton collisions at √s = 8 TeV |
| title | Search for pair-produced vectorlike B quarks in proton-proton collisions at √s = 8 TeV |
| title_full | Search for pair-produced vectorlike B quarks in proton-proton collisions at √s = 8 TeV |
| title_fullStr | Search for pair-produced vectorlike B quarks in proton-proton collisions at √s = 8 TeV |
| title_full_unstemmed | Search for pair-produced vectorlike B quarks in proton-proton collisions at √s = 8 TeV |
| title_short | Search for pair-produced vectorlike B quarks in proton-proton collisions at √s = 8 TeV |
| title_sort | search for pair produced vectorlike b quarks in proton proton collisions at √s 8 tev |
| url | http://hdl.handle.net/1721.1/106854 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/0000-0001-8521-737X https://orcid.org/0000-0001-9236-6621 https://orcid.org/0000-0003-4511-0855 https://orcid.org/0000-0002-0869-5631 https://orcid.org/0000-0003-1486-606X https://orcid.org/0000-0003-2593-7767 https://orcid.org/0000-0002-1136-6900 https://orcid.org/0000-0003-1281-0193 https://orcid.org/0000-0001-7842-1591 https://orcid.org/0000-0002-6047-4211 https://orcid.org/0000-0001-8983-2169 https://orcid.org/0000-0003-3106-4894 https://orcid.org/0000-0001-8261-8346 https://orcid.org/0000-0002-1260-777X 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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