Search for top squarks decaying via four-body or chargino-mediated modes in single-lepton final states in proton-proton collisions at √s=13 TeV
A search for the pair production of the lightest supersymmetric partner of the top quark ([˜ over t][subscript 1]) is presented. The search focuses on a compressed scenario where the mass difference between the top squark and the lightest supersymmetric particle, often considered to be the lightest...
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| author | Abercrombie, Daniel Robert Allen, Brandon Leigh Azzolini, Virginia Barbieri, Richard Alexander Baty, Austin Alan Bauer, Gerry P Bi, Ran Brandt, Stephanie Akemi Busza, Wit Cali, Ivan Amos D'Alfonso, Mariarosaria Demiragli, Zeynep Gomez-Ceballos, Guillelmo Goncharov, Maxim Harris, Philip Coleman Hsu, Dylan George Hu, Miao Iiyama, Yutaro Innocenti, Gian Michele Klute, Markus Kovalskyi, Dmytro Lee, Yen-Jie Levin, Andrew Michael Luckey Jr, P David Maier, Benedikt Marini, Andrea Carlo McGinn, Christopher Francis Mironov, Camelia Maria Narayanan, Siddharth Madhavan Niu, Xinmei Paus, Christoph M. E. Roland, Christof E Roland, Gunther M Stephans, George S. F. Sumorok, Konstanty C Tatar, Kaya Velicanu, Dragos Alexandru Wang, J. Wang, Ta-Wei Wyslouch, Boleslaw Zhaozhong, S. |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Abercrombie, Daniel Robert Allen, Brandon Leigh Azzolini, Virginia Barbieri, Richard Alexander Baty, Austin Alan Bauer, Gerry P Bi, Ran Brandt, Stephanie Akemi Busza, Wit Cali, Ivan Amos D'Alfonso, Mariarosaria Demiragli, Zeynep Gomez-Ceballos, Guillelmo Goncharov, Maxim Harris, Philip Coleman Hsu, Dylan George Hu, Miao Iiyama, Yutaro Innocenti, Gian Michele Klute, Markus Kovalskyi, Dmytro Lee, Yen-Jie Levin, Andrew Michael Luckey Jr, P David Maier, Benedikt Marini, Andrea Carlo McGinn, Christopher Francis Mironov, Camelia Maria Narayanan, Siddharth Madhavan Niu, Xinmei Paus, Christoph M. E. Roland, Christof E Roland, Gunther M Stephans, George S. F. Sumorok, Konstanty C Tatar, Kaya Velicanu, Dragos Alexandru Wang, J. Wang, Ta-Wei Wyslouch, Boleslaw Zhaozhong, S. |
| author_sort | Abercrombie, Daniel Robert |
| collection | MIT |
| description | A search for the pair production of the lightest supersymmetric partner of the top quark ([˜ over t][subscript 1]) is presented. The search focuses on a compressed scenario where the mass difference between the top squark and the lightest supersymmetric particle, often considered to be the lightest neutralino ([˜ 0 over χ[subscript 1]]), is smaller than the mass of the W boson. The proton-proton collision data were recorded by the CMS experiment at a centre-of-mass energy of 13 TeV, and correspond to an integrated luminosity of 35.9 fb[superscript −1]. In this search, two decay modes of the top squark are considered: a four-body decay into a bottom quark, two additional fermions, and a [˜0 over χ][subscript 1]; and a decay via an intermediate chargino. Events are selected using the presence of a high-momentum jet, significant missing transverse momentum, and a low transverse momentum electron or muon. Two analysis techniques are used, targeting different decay modes of the [˜ over t][subscript 1]: a sequential selection and a multivariate technique. No evidence for the production of top squarks is found, and mass limits at 95% confidence level are set that reach up to 560 GeV, depending on the m([˜ over t][subscript 1])−m([˜0 over χ[subscript 1]]) mass difference and the decay mode. Keywords: Hadron-Hadron scattering (experiments), Supersymmetry |
| first_indexed | 2024-09-23T09:35:02Z |
| format | Article |
| id | mit-1721.1/118836 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T09:35:02Z |
| publishDate | 2018 |
| publisher | Springer Nature |
| record_format | dspace |
| spelling | mit-1721.1/1188362022-09-26T12:28:36Z Search for top squarks decaying via four-body or chargino-mediated modes in single-lepton final states in proton-proton collisions at √s=13 TeV Abercrombie, Daniel Robert Allen, Brandon Leigh Azzolini, Virginia Barbieri, Richard Alexander Baty, Austin Alan Bauer, Gerry P Bi, Ran Brandt, Stephanie Akemi Busza, Wit Cali, Ivan Amos D'Alfonso, Mariarosaria Demiragli, Zeynep Gomez-Ceballos, Guillelmo Goncharov, Maxim Harris, Philip Coleman Hsu, Dylan George Hu, Miao Iiyama, Yutaro Innocenti, Gian Michele Klute, Markus Kovalskyi, Dmytro Lee, Yen-Jie Levin, Andrew Michael Luckey Jr, P David Maier, Benedikt Marini, Andrea Carlo McGinn, Christopher Francis Mironov, Camelia Maria Narayanan, Siddharth Madhavan Niu, Xinmei Paus, Christoph M. E. Roland, Christof E Roland, Gunther M Stephans, George S. F. Sumorok, Konstanty C Tatar, Kaya Velicanu, Dragos Alexandru Wang, J. Wang, Ta-Wei Wyslouch, Boleslaw Zhaozhong, S. Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Abercrombie, Daniel Robert Allen, Brandon Leigh Azzolini, Virginia Barbieri, Richard Alexander Baty, Austin Alan Bauer, Gerry P Bi, Ran Brandt, Stephanie Akemi Busza, Wit Cali, Ivan Amos D'Alfonso, Mariarosaria Demiragli, Zeynep Gomez-Ceballos, Guillelmo Goncharov, Maxim Harris, Philip Coleman Hsu, Dylan George Hu, Miao Iiyama, Yutaro Innocenti, Gian Michele Klute, Markus Kovalskyi, Dmytro Lee, Yen-Jie Levin, Andrew Michael Luckey Jr, P David Maier, Benedikt Marini, Andrea Carlo McGinn, Christopher Francis Mironov, Camelia Maria Narayanan, Siddharth Madhavan Niu, Xinmei Paus, Christoph M. E. Roland, Christof E Roland, Gunther M Stephans, George S. F. Sumorok, Konstanty C Tatar, Kaya Velicanu, Dragos Alexandru Wang, J. Wang, Ta-Wei Wyslouch, Boleslaw Zhaozhong, S. A search for the pair production of the lightest supersymmetric partner of the top quark ([˜ over t][subscript 1]) is presented. The search focuses on a compressed scenario where the mass difference between the top squark and the lightest supersymmetric particle, often considered to be the lightest neutralino ([˜ 0 over χ[subscript 1]]), is smaller than the mass of the W boson. The proton-proton collision data were recorded by the CMS experiment at a centre-of-mass energy of 13 TeV, and correspond to an integrated luminosity of 35.9 fb[superscript −1]. In this search, two decay modes of the top squark are considered: a four-body decay into a bottom quark, two additional fermions, and a [˜0 over χ][subscript 1]; and a decay via an intermediate chargino. Events are selected using the presence of a high-momentum jet, significant missing transverse momentum, and a low transverse momentum electron or muon. Two analysis techniques are used, targeting different decay modes of the [˜ over t][subscript 1]: a sequential selection and a multivariate technique. No evidence for the production of top squarks is found, and mass limits at 95% confidence level are set that reach up to 560 GeV, depending on the m([˜ over t][subscript 1])−m([˜0 over χ[subscript 1]]) mass difference and the decay mode. Keywords: Hadron-Hadron scattering (experiments), Supersymmetry National Science Foundation (U.S.) United States. Department of Energy 2018-11-02T14:04:49Z 2018-11-02T14:04:49Z 2018-09 2018-10-22T19:48:58Z Article http://purl.org/eprint/type/JournalArticle 1029-8479 http://hdl.handle.net/1721.1/118836 The CMS collaboration, et al. “Search for Top Squarks Decaying via Four-Body or Chargino-Mediated Modes in Single-Lepton Final States in Proton-Proton Collisions at √s = 13 TeV.” Journal of High Energy Physics, vol. 2018, no. 9, Sept. 2018. © 2018 The Authors https://orcid.org/0000-0003-0293-1944 https://orcid.org/0000-0002-4371-2038 https://orcid.org/0000-0002-7945-005X https://orcid.org/0000-0001-5310-3466 https://orcid.org/0000-0003-3951-4634 https://orcid.org/0000-0002-8590-2673 https://orcid.org/0000-0002-3831-9071 https://orcid.org/0000-0002-2822-3375 https://orcid.org/0000-0002-7409-7904 https://orcid.org/0000-0001-8521-737X https://orcid.org/0000-0001-8189-3741 https://orcid.org/0000-0002-8696-1747 https://orcid.org/0000-0002-8297-5930 https://orcid.org/0000-0003-4511-0855 https://orcid.org/0000-0002-0869-5631 https://orcid.org/0000-0002-6923-293X https://orcid.org/0000-0003-2593-7767 https://orcid.org/0000-0002-1136-6900 https://orcid.org/0000-0003-2351-0487 https://orcid.org/0000-0003-1281-0193 https://orcid.org/0000-0002-8599-2437 https://orcid.org/0000-0003-2723-3560 https://orcid.org/0000-0001-7842-1591 https://orcid.org/0000-0002-6047-4211 https://orcid.org/0000-0002-7312-5854 https://orcid.org/0000-0001-8983-2169 https://orcid.org/0000-0003-3106-4894 https://orcid.org/0000-0002-6448-0168 https://orcid.org/0000-0002-1260-777X https://orcid.org/0000-0002-0899-7621 https://orcid.org/0000-0003-3681-0649 http://dx.doi.org/10.1007/JHEP09(2018)065 Journal of High Energy Physics Creative Commons Attribution 4.0 International License http://creativecommons.org/licenses/by/4.0/ application/pdf Springer Nature Springer |
| spellingShingle | Abercrombie, Daniel Robert Allen, Brandon Leigh Azzolini, Virginia Barbieri, Richard Alexander Baty, Austin Alan Bauer, Gerry P Bi, Ran Brandt, Stephanie Akemi Busza, Wit Cali, Ivan Amos D'Alfonso, Mariarosaria Demiragli, Zeynep Gomez-Ceballos, Guillelmo Goncharov, Maxim Harris, Philip Coleman Hsu, Dylan George Hu, Miao Iiyama, Yutaro Innocenti, Gian Michele Klute, Markus Kovalskyi, Dmytro Lee, Yen-Jie Levin, Andrew Michael Luckey Jr, P David Maier, Benedikt Marini, Andrea Carlo McGinn, Christopher Francis Mironov, Camelia Maria Narayanan, Siddharth Madhavan Niu, Xinmei Paus, Christoph M. E. Roland, Christof E Roland, Gunther M Stephans, George S. F. Sumorok, Konstanty C Tatar, Kaya Velicanu, Dragos Alexandru Wang, J. Wang, Ta-Wei Wyslouch, Boleslaw Zhaozhong, S. Search for top squarks decaying via four-body or chargino-mediated modes in single-lepton final states in proton-proton collisions at √s=13 TeV |
| title | Search for top squarks decaying via four-body or chargino-mediated modes in single-lepton final states in proton-proton collisions at √s=13 TeV |
| title_full | Search for top squarks decaying via four-body or chargino-mediated modes in single-lepton final states in proton-proton collisions at √s=13 TeV |
| title_fullStr | Search for top squarks decaying via four-body or chargino-mediated modes in single-lepton final states in proton-proton collisions at √s=13 TeV |
| title_full_unstemmed | Search for top squarks decaying via four-body or chargino-mediated modes in single-lepton final states in proton-proton collisions at √s=13 TeV |
| title_short | Search for top squarks decaying via four-body or chargino-mediated modes in single-lepton final states in proton-proton collisions at √s=13 TeV |
| title_sort | search for top squarks decaying via four body or chargino mediated modes in single lepton final states in proton proton collisions at √s 13 tev |
| url | http://hdl.handle.net/1721.1/118836 https://orcid.org/0000-0003-0293-1944 https://orcid.org/0000-0002-4371-2038 https://orcid.org/0000-0002-7945-005X https://orcid.org/0000-0001-5310-3466 https://orcid.org/0000-0003-3951-4634 https://orcid.org/0000-0002-8590-2673 https://orcid.org/0000-0002-3831-9071 https://orcid.org/0000-0002-2822-3375 https://orcid.org/0000-0002-7409-7904 https://orcid.org/0000-0001-8521-737X https://orcid.org/0000-0001-8189-3741 https://orcid.org/0000-0002-8696-1747 https://orcid.org/0000-0002-8297-5930 https://orcid.org/0000-0003-4511-0855 https://orcid.org/0000-0002-0869-5631 https://orcid.org/0000-0002-6923-293X https://orcid.org/0000-0003-2593-7767 https://orcid.org/0000-0002-1136-6900 https://orcid.org/0000-0003-2351-0487 https://orcid.org/0000-0003-1281-0193 https://orcid.org/0000-0002-8599-2437 https://orcid.org/0000-0003-2723-3560 https://orcid.org/0000-0001-7842-1591 https://orcid.org/0000-0002-6047-4211 https://orcid.org/0000-0002-7312-5854 https://orcid.org/0000-0001-8983-2169 https://orcid.org/0000-0003-3106-4894 https://orcid.org/0000-0002-6448-0168 https://orcid.org/0000-0002-1260-777X https://orcid.org/0000-0002-0899-7621 https://orcid.org/0000-0003-3681-0649 |
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