Search for single production of vector-like quarks decaying to a top quark and a W boson in proton–proton collisions at √s = 13 TeV
A search is presented for the single production of vector-like quarks in proton–proton collisions at √s = 13 TeV. The data, corresponding to an integrated luminosity of 35.9 fb−1, were recorded with the CMS experiment at the LHC. The analysis focuses on the vector-like quark decay into a top qu...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English English English |
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Springer Nature
2019
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| Online Access: | http://irep.iium.edu.my/71634/ http://irep.iium.edu.my/71634/1/71634_Search%20for%20single%20production%20of%20vector-like%20quarks_article.pdf http://irep.iium.edu.my/71634/2/71634_Search%20for%20single%20production%20of%20vector-like%20quarks_wos.pdf http://irep.iium.edu.my/71634/3/71634_Search%20for%20single%20production%20of%20vector-like%20quarks_scopus.pdf |
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| author | Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Asilar, Ece Bergauer, Thomas Md. Ali, Mohd. Adli |
| author_facet | Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Asilar, Ece Bergauer, Thomas Md. Ali, Mohd. Adli |
| author_sort | Sirunyan, A. M. |
| building | IIUM Repository |
| collection | Online Access |
| description | A search is presented for the single production
of vector-like quarks in proton–proton collisions at √s =
13 TeV. The data, corresponding to an integrated luminosity
of 35.9 fb−1, were recorded with the CMS experiment at the
LHC. The analysis focuses on the vector-like quark decay
into a top quark and a W boson, with one muon or electron
in the final state. The mass of the vector-like quark candidate
is reconstructed from hadronic jets, the lepton, and the missing transverse momentum. Methods for the identification of
b quarks and of highly Lorentz boosted hadronically decaying top quarks and W bosons are exploited in this search. No
significant deviation from the standard model background
expectation is observed. Exclusion limits at 95% confidence
level are set on the product of the production cross section
and branching fraction as a function of the vector-like quark
mass, which range from 0.3 to 0.03 pb for vector-like quark
masses of 700 to 2000 GeV. Mass exclusion limits up to
1660 GeV are obtained, depending on the vector-like quark
type, coupling, and decay width. These represent the most
stringent exclusion limits for the single production of vectorlike quarks in this channel. |
| first_indexed | 2025-11-14T17:25:39Z |
| format | Article |
| id | iium-71634 |
| institution | International Islamic University Malaysia |
| institution_category | Local University |
| language | English English English |
| last_indexed | 2025-11-14T17:25:39Z |
| publishDate | 2019 |
| publisher | Springer Nature |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | iium-716342020-02-10T02:23:11Z http://irep.iium.edu.my/71634/ Search for single production of vector-like quarks decaying to a top quark and a W boson in proton–proton collisions at √s = 13 TeV Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Asilar, Ece Bergauer, Thomas Md. Ali, Mohd. Adli Q Science (General) QC Physics A search is presented for the single production of vector-like quarks in proton–proton collisions at √s = 13 TeV. The data, corresponding to an integrated luminosity of 35.9 fb−1, were recorded with the CMS experiment at the LHC. The analysis focuses on the vector-like quark decay into a top quark and a W boson, with one muon or electron in the final state. The mass of the vector-like quark candidate is reconstructed from hadronic jets, the lepton, and the missing transverse momentum. Methods for the identification of b quarks and of highly Lorentz boosted hadronically decaying top quarks and W bosons are exploited in this search. No significant deviation from the standard model background expectation is observed. Exclusion limits at 95% confidence level are set on the product of the production cross section and branching fraction as a function of the vector-like quark mass, which range from 0.3 to 0.03 pb for vector-like quark masses of 700 to 2000 GeV. Mass exclusion limits up to 1660 GeV are obtained, depending on the vector-like quark type, coupling, and decay width. These represent the most stringent exclusion limits for the single production of vectorlike quarks in this channel. Springer Nature 2019-01-30 Article PeerReviewed application/pdf en http://irep.iium.edu.my/71634/1/71634_Search%20for%20single%20production%20of%20vector-like%20quarks_article.pdf application/pdf en http://irep.iium.edu.my/71634/2/71634_Search%20for%20single%20production%20of%20vector-like%20quarks_wos.pdf application/pdf en http://irep.iium.edu.my/71634/3/71634_Search%20for%20single%20production%20of%20vector-like%20quarks_scopus.pdf Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Asilar, Ece and Bergauer, Thomas and Md. Ali, Mohd. Adli (2019) Search for single production of vector-like quarks decaying to a top quark and a W boson in proton–proton collisions at √s = 13 TeV. European Physical Journal C, 79 (2). pp. 1-29. ISSN 1434-6044 E-ISSN 1434-6052 https://link.springer.com/content/pdf/10.1140%2Fepjc%2Fs10052-019-6556-3.pdf 10.1140/epjc/s10052-019-6556-3 |
| spellingShingle | Q Science (General) QC Physics Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Asilar, Ece Bergauer, Thomas Md. Ali, Mohd. Adli Search for single production of vector-like quarks decaying to a top quark and a W boson in proton–proton collisions at √s = 13 TeV |
| title | Search for single production of vector-like quarks decaying to a top quark and a W boson in proton–proton collisions at √s = 13 TeV |
| title_full | Search for single production of vector-like quarks decaying to a top quark and a W boson in proton–proton collisions at √s = 13 TeV |
| title_fullStr | Search for single production of vector-like quarks decaying to a top quark and a W boson in proton–proton collisions at √s = 13 TeV |
| title_full_unstemmed | Search for single production of vector-like quarks decaying to a top quark and a W boson in proton–proton collisions at √s = 13 TeV |
| title_short | Search for single production of vector-like quarks decaying to a top quark and a W boson in proton–proton collisions at √s = 13 TeV |
| title_sort | search for single production of vector-like quarks decaying to a top quark and a w boson in proton–proton collisions at √s = 13 tev |
| topic | Q Science (General) QC Physics |
| url | http://irep.iium.edu.my/71634/ http://irep.iium.edu.my/71634/ http://irep.iium.edu.my/71634/ http://irep.iium.edu.my/71634/1/71634_Search%20for%20single%20production%20of%20vector-like%20quarks_article.pdf http://irep.iium.edu.my/71634/2/71634_Search%20for%20single%20production%20of%20vector-like%20quarks_wos.pdf http://irep.iium.edu.my/71634/3/71634_Search%20for%20single%20production%20of%20vector-like%20quarks_scopus.pdf |