Search for Black Holes and Sphalerons in High-Multiplicity Final States in Proton-Proton Collisions at √s = 13 TeV
A search in energetic, high-multiplicity final states for evidence of physics beyond the standard model, such as black holes, string balls, and electroweak sphalerons, is presented. The data sample corresponds to an integrated luminosity of 35.9 fb⁻¹ collected with the CMS experiment at the LHC in p...
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| author | CMS Collaboration Abercrombie, Daniel Robert Allen, Brandon Leigh Azzolini, Virginia 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 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, Jing Wang, Ta-Wei Wyslouch, Boleslaw Shi, Zhaozhong |
| author2 | Massachusetts Institute of Technology. Department of Nuclear Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Nuclear Science and Engineering CMS Collaboration Abercrombie, Daniel Robert Allen, Brandon Leigh Azzolini, Virginia 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 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, Jing Wang, Ta-Wei Wyslouch, Boleslaw Shi, Zhaozhong |
| author_sort | CMS Collaboration |
| collection | MIT |
| description | A search in energetic, high-multiplicity final states for evidence of physics beyond the standard model, such as black holes, string balls, and electroweak sphalerons, is presented. The data sample corresponds to an integrated luminosity of 35.9 fb⁻¹ collected with the CMS experiment at the LHC in proton-proton collisions at a center-of-mass energy of 13 TeV in 2016. Standard model backgrounds, dominated by multijet production, are determined from control regions in data without any reliance on simulation. No evidence for excesses above the predicted background is observed. Model-independent 95% confidence level upper limits on the cross section of beyond the standard model signals in these final states are set and further interpreted in terms of limits on semiclassical black hole, string ball, and sphaleron production. In the context of models with large extra dimensions, semiclassical black holes with minimum masses as high as 10.1 TeV and string balls with masses as high as 9.5 TeV are excluded by this search. Results of the first dedicated search for electroweak sphalerons are presented. An upper limit of 0.021 is set at 95% confidence level on the fraction of all quark-quark interactions above the nominal threshold energy of 9 TeV resulting in the sphaleron transition. Keywords:
Beyond Standard Model; Hadron-Hadron scattering (experiments) |
| first_indexed | 2024-09-23T13:24:25Z |
| format | Article |
| id | mit-1721.1/119253 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T13:24:25Z |
| publishDate | 2018 |
| publisher | Springer Nature |
| record_format | dspace |
| spelling | mit-1721.1/1192532022-09-28T13:57:54Z Search for Black Holes and Sphalerons in High-Multiplicity Final States in Proton-Proton Collisions at √s = 13 TeV CMS Collaboration Abercrombie, Daniel Robert Allen, Brandon Leigh Azzolini, Virginia 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 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, Jing Wang, Ta-Wei Wyslouch, Boleslaw Shi, Zhaozhong Massachusetts Institute of Technology. Department of Nuclear Science and Engineering Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science Abercrombie, Daniel Robert Allen, Brandon Leigh Azzolini, Virginia 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 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, Jing Wang, Ta-Wei Wyslouch, Boleslaw Shi, Zhaozhong A search in energetic, high-multiplicity final states for evidence of physics beyond the standard model, such as black holes, string balls, and electroweak sphalerons, is presented. The data sample corresponds to an integrated luminosity of 35.9 fb⁻¹ collected with the CMS experiment at the LHC in proton-proton collisions at a center-of-mass energy of 13 TeV in 2016. Standard model backgrounds, dominated by multijet production, are determined from control regions in data without any reliance on simulation. No evidence for excesses above the predicted background is observed. Model-independent 95% confidence level upper limits on the cross section of beyond the standard model signals in these final states are set and further interpreted in terms of limits on semiclassical black hole, string ball, and sphaleron production. In the context of models with large extra dimensions, semiclassical black holes with minimum masses as high as 10.1 TeV and string balls with masses as high as 9.5 TeV are excluded by this search. Results of the first dedicated search for electroweak sphalerons are presented. An upper limit of 0.021 is set at 95% confidence level on the fraction of all quark-quark interactions above the nominal threshold energy of 9 TeV resulting in the sphaleron transition. Keywords: Beyond Standard Model; Hadron-Hadron scattering (experiments) 2018-11-26T16:51:16Z 2018-11-26T16:51:16Z 2018-11 2018-08 Article http://purl.org/eprint/type/JournalArticle 1029-8479 http://hdl.handle.net/1721.1/119253 Sirunyan, A. M. et al. “Search for Black Holes and Sphalerons in High-Multiplicity Final States in Proton-Proton Collisions at √s = 13 TeV.” Journal of High Energy Physics 2018, 11 (November 2018): 42 © 2018 The Author(s) https://orcid.org/0000-0003-0293-1944 https://orcid.org/0000-0002-4371-2038 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/0000-0003-2351-0487 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/0000-0001-5259-1883 https://orcid.org/0000-0002-0899-7621 https://orcid.org/0000-0003-3681-0649 https://orcid.org/0000-0001-5498-8825 en_US https://doi.org/10.1007/JHEP11(2018)042 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 | CMS Collaboration Abercrombie, Daniel Robert Allen, Brandon Leigh Azzolini, Virginia 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 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, Jing Wang, Ta-Wei Wyslouch, Boleslaw Shi, Zhaozhong Search for Black Holes and Sphalerons in High-Multiplicity Final States in Proton-Proton Collisions at √s = 13 TeV |
| title | Search for Black Holes and Sphalerons in High-Multiplicity Final States in Proton-Proton Collisions at √s = 13 TeV |
| title_full | Search for Black Holes and Sphalerons in High-Multiplicity Final States in Proton-Proton Collisions at √s = 13 TeV |
| title_fullStr | Search for Black Holes and Sphalerons in High-Multiplicity Final States in Proton-Proton Collisions at √s = 13 TeV |
| title_full_unstemmed | Search for Black Holes and Sphalerons in High-Multiplicity Final States in Proton-Proton Collisions at √s = 13 TeV |
| title_short | Search for Black Holes and Sphalerons in High-Multiplicity Final States in Proton-Proton Collisions at √s = 13 TeV |
| title_sort | search for black holes and sphalerons in high multiplicity final states in proton proton collisions at √s 13 tev |
| url | http://hdl.handle.net/1721.1/119253 https://orcid.org/0000-0003-0293-1944 https://orcid.org/0000-0002-4371-2038 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/0000-0003-2351-0487 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/0000-0001-5259-1883 https://orcid.org/0000-0002-0899-7621 https://orcid.org/0000-0003-3681-0649 https://orcid.org/0000-0001-5498-8825 |
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