Search for s channel single top quark production in pp collisions at s = 7 √s=7 and 8 TeV
© 2016, The Author(s). A search is presented for single top quark production in the s channel in proton-proton collisions with the CMS detector at the CERN LHC in decay modes of the top quark containing a muon or an electron in the final state. The signal is extracted through a maximum-likelihood fi...
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| Format: | Article |
| Language: | English |
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Springer Science and Business Media LLC
2021
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| Online Access: | https://hdl.handle.net/1721.1/134301 |
| _version_ | 1811086703365980160 |
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| author | The CMS Collaboration |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics The CMS Collaboration |
| author_sort | The CMS Collaboration |
| collection | MIT |
| description | © 2016, The Author(s). A search is presented for single top quark production in the s channel in proton-proton collisions with the CMS detector at the CERN LHC in decay modes of the top quark containing a muon or an electron in the final state. The signal is extracted through a maximum-likelihood fit to the distribution of a multivariate discriminant defined using boosted decision trees to separate the expected signal contribution from background processes. The analysis uses data collected at centre-of-mass energies of 7 and 8 TeV and corresponding to integrated luminosities of 5.1 and 19.7 fb−1, respectively. The measured cross sections of 7.1 ± 8.1 pb (at 7 TeV) and 13.4 ± 7.3 pb (at 8 TeV) result in a best fit value of 2.0 ± 0.9 for the combined ratio of the measured and expected values. The signal significance is 2.5 standard deviations, and the upper limit on the rate relative to the standard model expectation is 4.7 at 95% confidence level.[Figure not available: see fulltext.] |
| first_indexed | 2024-09-23T13:31:18Z |
| format | Article |
| id | mit-1721.1/134301 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T13:31:18Z |
| publishDate | 2021 |
| publisher | Springer Science and Business Media LLC |
| record_format | dspace |
| spelling | mit-1721.1/1343012023-01-06T16:20:48Z Search for s channel single top quark production in pp collisions at s = 7 √s=7 and 8 TeV The CMS Collaboration Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science © 2016, The Author(s). A search is presented for single top quark production in the s channel in proton-proton collisions with the CMS detector at the CERN LHC in decay modes of the top quark containing a muon or an electron in the final state. The signal is extracted through a maximum-likelihood fit to the distribution of a multivariate discriminant defined using boosted decision trees to separate the expected signal contribution from background processes. The analysis uses data collected at centre-of-mass energies of 7 and 8 TeV and corresponding to integrated luminosities of 5.1 and 19.7 fb−1, respectively. The measured cross sections of 7.1 ± 8.1 pb (at 7 TeV) and 13.4 ± 7.3 pb (at 8 TeV) result in a best fit value of 2.0 ± 0.9 for the combined ratio of the measured and expected values. The signal significance is 2.5 standard deviations, and the upper limit on the rate relative to the standard model expectation is 4.7 at 95% confidence level.[Figure not available: see fulltext.] 2021-10-27T20:04:22Z 2021-10-27T20:04:22Z 2016 2019-05-14T13:28:36Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/134301 en 10.1007/JHEP09(2016)027 Journal of High Energy Physics Creative Commons Attribution 4.0 International license https://creativecommons.org/licenses/by/4.0/ application/pdf Springer Science and Business Media LLC Springer |
| spellingShingle | The CMS Collaboration Search for s channel single top quark production in pp collisions at s = 7 √s=7 and 8 TeV |
| title | Search for s channel single top quark production in pp collisions at s = 7 √s=7 and 8 TeV |
| title_full | Search for s channel single top quark production in pp collisions at s = 7 √s=7 and 8 TeV |
| title_fullStr | Search for s channel single top quark production in pp collisions at s = 7 √s=7 and 8 TeV |
| title_full_unstemmed | Search for s channel single top quark production in pp collisions at s = 7 √s=7 and 8 TeV |
| title_short | Search for s channel single top quark production in pp collisions at s = 7 √s=7 and 8 TeV |
| title_sort | search for s channel single top quark production in pp collisions at s 7 √s 7 and 8 tev |
| url | https://hdl.handle.net/1721.1/134301 |
| work_keys_str_mv | AT thecmscollaboration searchforschannelsingletopquarkproductioninppcollisionsats7s7and8tev |