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...

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Main Authors:	Sirunyan, A. M., Tumasyan, A. R., Adam, Wolfgang, Asilar, Ece, Bergauer, Thomas, Md. Ali, Mohd. Adli
Format:	Article
Language:	English English English
Published:	Springer Nature 2019
Subjects:	Q Science (General) QC Physics
Online Access:	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

id	iium-71634
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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
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English English English
topic	Q Science (General) QC Physics
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
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.
format	Article
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.
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_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_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_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
publisher	Springer Nature
publishDate	2019
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
first_indexed	2023-09-18T21:41:34Z
last_indexed	2023-09-18T21:41:34Z
_version_	1777413175259430912

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

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