Observation of single top quark production in association with a Z Boson in proton-proton collisions at s =13 TeV

The observation of single top quark production in association with a Z boson and a quark (tZq) is reported. Events from proton-proton collisions at a center-of-mass energy of 13 TeV containing three charged leptons (either electrons or muons) and at least two jets are analyzed. The data were collect...

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Main Authors:	Sirunyan, A. M., Tumasyan, A. R., Adam, Wolfgang, Ambrogi, Federico, Md.Ali, Mohd Adli
Format:	Article
Language:	English English
Published:	American Physical Society 2019
Subjects:	Q Science (General) QC Physics
Online Access:	http://irep.iium.edu.my/72646/ http://irep.iium.edu.my/72646/ http://irep.iium.edu.my/72646/ http://irep.iium.edu.my/72646/1/72646%20Observation%20of%20Single%20Top%20Quark.pdf http://irep.iium.edu.my/72646/2/72646%20Observation%20of%20Single%20Top%20Quark%20SCOPUS.pdf

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spelling	iium-726462019-06-18T06:42:15Z http://irep.iium.edu.my/72646/ Observation of single top quark production in association with a Z Boson in proton-proton collisions at s =13 TeV Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Ambrogi, Federico Md.Ali, Mohd Adli Q Science (General) QC Physics The observation of single top quark production in association with a Z boson and a quark (tZq) is reported. Events from proton-proton collisions at a center-of-mass energy of 13 TeV containing three charged leptons (either electrons or muons) and at least two jets are analyzed. The data were collected with the CMS detector in 2016 and 2017 and correspond to an integrated luminosity of 77.4fb-1. The increased integrated luminosity, a multivariate lepton identification, and a redesigned analysis strategy improve significantly the sensitivity of the analysis compared to previous searches for tZq production. The tZq signal is observed with a significance well over 5 standard deviations. The measured tZq production cross section is σ(pp→tZq→t?+?-q)=111±13(stat)-9+11(syst) fb, for dilepton invariant masses above 30 GeV, in agreement with the standard model expectation. American Physical Society 2019-04-05 Article PeerReviewed application/pdf en http://irep.iium.edu.my/72646/1/72646%20Observation%20of%20Single%20Top%20Quark.pdf application/pdf en http://irep.iium.edu.my/72646/2/72646%20Observation%20of%20Single%20Top%20Quark%20SCOPUS.pdf Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Ambrogi, Federico and Md.Ali, Mohd Adli (2019) Observation of single top quark production in association with a Z Boson in proton-proton collisions at s =13 TeV. Physical Review Letters, 122 (13). pp. 1-19. ISSN 0031-9007 E-ISSN 1079-7114 https://journals.aps.org/prl/pdf/10.1103/PhysRevLett.122.132003 10.1103/PhysRevLett.122.132003
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 Ambrogi, Federico Md.Ali, Mohd Adli Observation of single top quark production in association with a Z Boson in proton-proton collisions at s =13 TeV
description	The observation of single top quark production in association with a Z boson and a quark (tZq) is reported. Events from proton-proton collisions at a center-of-mass energy of 13 TeV containing three charged leptons (either electrons or muons) and at least two jets are analyzed. The data were collected with the CMS detector in 2016 and 2017 and correspond to an integrated luminosity of 77.4fb-1. The increased integrated luminosity, a multivariate lepton identification, and a redesigned analysis strategy improve significantly the sensitivity of the analysis compared to previous searches for tZq production. The tZq signal is observed with a significance well over 5 standard deviations. The measured tZq production cross section is σ(pp→tZq→t?+?-q)=111±13(stat)-9+11(syst) fb, for dilepton invariant masses above 30 GeV, in agreement with the standard model expectation.
format	Article
author	Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Ambrogi, Federico Md.Ali, Mohd Adli
author_facet	Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Ambrogi, Federico Md.Ali, Mohd Adli
author_sort	Sirunyan, A. M.
title	Observation of single top quark production in association with a Z Boson in proton-proton collisions at s =13 TeV
title_short	Observation of single top quark production in association with a Z Boson in proton-proton collisions at s =13 TeV
title_full	Observation of single top quark production in association with a Z Boson in proton-proton collisions at s =13 TeV
title_fullStr	Observation of single top quark production in association with a Z Boson in proton-proton collisions at s =13 TeV
title_full_unstemmed	Observation of single top quark production in association with a Z Boson in proton-proton collisions at s =13 TeV
title_sort	observation of single top quark production in association with a z boson in proton-proton collisions at s =13 tev
publisher	American Physical Society
publishDate	2019
url	http://irep.iium.edu.my/72646/ http://irep.iium.edu.my/72646/ http://irep.iium.edu.my/72646/ http://irep.iium.edu.my/72646/1/72646%20Observation%20of%20Single%20Top%20Quark.pdf http://irep.iium.edu.my/72646/2/72646%20Observation%20of%20Single%20Top%20Quark%20SCOPUS.pdf
first_indexed	2023-09-18T21:42:57Z
last_indexed	2023-09-18T21:42:57Z
_version_	1777413261643218944

Observation of single top quark production in association with a Z Boson in proton-proton collisions at s =13 TeV

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