Search for single production of a vector-like T quark decaying to a Z boson and a top quark in proton–proton collisions at s=13TeV

A search for single production of vector-like quarks, T and B, decaying into a Z boson and a top or a bottom quark, respectively, is presented. The search is performed using data collected by the CMS experiment at the LHC in proton-proton collisions at √ s = 13 TeV, corresponding to an integrate...

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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
Published:	Elsevier 2018
Subjects:	Q Science (General) QC Physics
Online Access:	http://irep.iium.edu.my/65673/ http://irep.iium.edu.my/65673/ http://irep.iium.edu.my/65673/ http://irep.iium.edu.my/65673/1/65673_Search%20for%20single%20production%20of%20vector-like%20quarks_article_new.pdf http://irep.iium.edu.my/65673/2/65673_Search%20for%20single%20production%20of%20vector-like%20quarks_scopus_new.pdf

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spelling	iium-656732018-08-14T01:14:34Z http://irep.iium.edu.my/65673/ Search for single production of a vector-like T quark decaying to a Z boson and a top quark in proton–proton collisions at s=13TeV Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Asilar, Ece Bergauer, Thomas Md. Ali, Mohd. Adli Q Science (General) QC Physics A search for single production of vector-like quarks, T and B, decaying into a Z boson and a top or a bottom quark, respectively, is presented. The search is performed using data collected by the CMS experiment at the LHC in proton-proton collisions at √ s = 13 TeV, corresponding to an integrated luminosity of 2.3 fb−1 . An exotic T quark production mode through the decay of a heavy Z0 resonance is also considered. The search is performed in events with a Z boson decaying leptonically, accompanied by a bottom or a top quark decaying hadronically. No excess of events is observed over the standard model background expectation. Products of production cross section and branching fraction for T and B quarks from 1.26 and 0.13 pb are excluded at 95% confidence level for the range of resonance mass considered, which is between 0.7 and 1.7 TeV. Limits on the product of the Z0 boson production cross section and branching fraction, with the Z0 boson decaying to the Tt final state, are set between 0.31 and 0.13 pb, for Z0 boson masses in the range from 1.5 to 2.5 TeV. This is the first search at 13 TeV for single production of vector-like quarks in events with a Z boson decaying leptonically accompanied by boosted jets. Elsevier 2018-06-10 Article PeerReviewed application/pdf en http://irep.iium.edu.my/65673/1/65673_Search%20for%20single%20production%20of%20vector-like%20quarks_article_new.pdf application/pdf en http://irep.iium.edu.my/65673/2/65673_Search%20for%20single%20production%20of%20vector-like%20quarks_scopus_new.pdf Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Asilar, Ece and Bergauer, Thomas and Md. Ali, Mohd. Adli (2018) Search for single production of a vector-like T quark decaying to a Z boson and a top quark in proton–proton collisions at s=13TeV. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 781. pp. 574-600. ISSN 0370-2693 https://reader.elsevier.com/reader/sd/0DE9214571286BCF53072844E8A97506A4A2511A7AC4EA7AE855BBF91A7A082DB32BC4A0989AEB56F4B84C7644D 10.1016/j.physletb.2018.04.036
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	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 a vector-like T quark decaying to a Z boson and a top quark in proton–proton collisions at s=13TeV
description	A search for single production of vector-like quarks, T and B, decaying into a Z boson and a top or a bottom quark, respectively, is presented. The search is performed using data collected by the CMS experiment at the LHC in proton-proton collisions at √ s = 13 TeV, corresponding to an integrated luminosity of 2.3 fb−1 . An exotic T quark production mode through the decay of a heavy Z0 resonance is also considered. The search is performed in events with a Z boson decaying leptonically, accompanied by a bottom or a top quark decaying hadronically. No excess of events is observed over the standard model background expectation. Products of production cross section and branching fraction for T and B quarks from 1.26 and 0.13 pb are excluded at 95% confidence level for the range of resonance mass considered, which is between 0.7 and 1.7 TeV. Limits on the product of the Z0 boson production cross section and branching fraction, with the Z0 boson decaying to the Tt final state, are set between 0.31 and 0.13 pb, for Z0 boson masses in the range from 1.5 to 2.5 TeV. This is the first search at 13 TeV for single production of vector-like quarks in events with a Z boson decaying leptonically accompanied by boosted jets.
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 a vector-like T quark decaying to a Z boson and a top quark in proton–proton collisions at s=13TeV
title_short	Search for single production of a vector-like T quark decaying to a Z boson and a top quark in proton–proton collisions at s=13TeV
title_full	Search for single production of a vector-like T quark decaying to a Z boson and a top quark in proton–proton collisions at s=13TeV
title_fullStr	Search for single production of a vector-like T quark decaying to a Z boson and a top quark in proton–proton collisions at s=13TeV
title_full_unstemmed	Search for single production of a vector-like T quark decaying to a Z boson and a top quark in proton–proton collisions at s=13TeV
title_sort	search for single production of a vector-like t quark decaying to a z boson and a top quark in proton–proton collisions at s=13tev
publisher	Elsevier
publishDate	2018
url	http://irep.iium.edu.my/65673/ http://irep.iium.edu.my/65673/ http://irep.iium.edu.my/65673/ http://irep.iium.edu.my/65673/1/65673_Search%20for%20single%20production%20of%20vector-like%20quarks_article_new.pdf http://irep.iium.edu.my/65673/2/65673_Search%20for%20single%20production%20of%20vector-like%20quarks_scopus_new.pdf
first_indexed	2023-09-18T21:33:10Z
last_indexed	2023-09-18T21:33:10Z
_version_	1777412646496108544

Search for single production of a vector-like T quark decaying to a Z boson and a top quark in proton–proton collisions at s=13TeV

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