Search for associated production of a Z boson with a single top quark and for tZ flavour-changing interactions in pp collisions at √s=8 TeV

A search for the production of a single top quark in association with a Z boson is presented, both to identify the expected standard model process and to search for flavourchanging neutral current interactions. The data sample corresponds to an integrated luminosity of 19.7 fb−1 recorded by the...

Full description

Bibliographic Details
Main Authors:	Sirunyan, A. M., Tumasyan, A. R., Adam, Wolfgang, Asilar, Ece, Bergauer, Thomas, Md. Ali, Mohd. Adli
Format:	Article
Language:	English English
Published:	Springer Nature 2017
Subjects:	Q Science (General) QC Physics
Online Access:	http://irep.iium.edu.my/63060/ http://irep.iium.edu.my/63060/ http://irep.iium.edu.my/63060/ http://irep.iium.edu.my/63060/1/63060_earch%20for%20associated%20production%20of%20a%20Z%20boson_article.pdf http://irep.iium.edu.my/63060/2/63060_earch%20for%20associated%20production%20of%20a%20Z%20boson_scopus.pdf

id	iium-63060
recordtype	eprints
spelling	iium-630602018-11-05T04:49:37Z http://irep.iium.edu.my/63060/ Search for associated production of a Z boson with a single top quark and for tZ flavour-changing interactions in pp collisions at √s=8 TeV Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Asilar, Ece Bergauer, Thomas Md. Ali, Mohd. Adli Q Science (General) QC Physics A search for the production of a single top quark in association with a Z boson is presented, both to identify the expected standard model process and to search for flavourchanging neutral current interactions. The data sample corresponds to an integrated luminosity of 19.7 fb−1 recorded by the CMS experiment at the LHC in proton-proton collisions at √ s = 8 TeV. Final states with three leptons (electrons or muons) and at least one jet are investigated. An events yield compatible with tZq standard model production is observed, and the corresponding cross section is measured to be σ(pp → tZq → `νb` +` −q) = 10+8 −7 fb with a significance of 2.4 standard deviations. No presence of flavour-changing neutral current production of tZq is observed. Exclusion limits at 95% confidence level on the branching fractions of a top quark decaying to a Z boson and an up or a charm quark are found to be B(t → Zu) < 0.022% and B(t → Zc) < 0.049%. Springer Nature 2017-07-01 Article NonPeerReviewed application/pdf en http://irep.iium.edu.my/63060/1/63060_earch%20for%20associated%20production%20of%20a%20Z%20boson_article.pdf application/pdf en http://irep.iium.edu.my/63060/2/63060_earch%20for%20associated%20production%20of%20a%20Z%20boson_scopus.pdf Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Asilar, Ece and Bergauer, Thomas and Md. Ali, Mohd. Adli (2017) Search for associated production of a Z boson with a single top quark and for tZ flavour-changing interactions in pp collisions at √s=8 TeV. Journal of High Energy Physics, 2017 (7). ISSN 1029-8479 https://link.springer.com/content/pdf/10.1007%2FJHEP07%282017%29003.pdf 10.1007/JHEP07(2017)003
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 associated production of a Z boson with a single top quark and for tZ flavour-changing interactions in pp collisions at √s=8 TeV
description	A search for the production of a single top quark in association with a Z boson is presented, both to identify the expected standard model process and to search for flavourchanging neutral current interactions. The data sample corresponds to an integrated luminosity of 19.7 fb−1 recorded by the CMS experiment at the LHC in proton-proton collisions at √ s = 8 TeV. Final states with three leptons (electrons or muons) and at least one jet are investigated. An events yield compatible with tZq standard model production is observed, and the corresponding cross section is measured to be σ(pp → tZq → `νb` +` −q) = 10+8 −7 fb with a significance of 2.4 standard deviations. No presence of flavour-changing neutral current production of tZq is observed. Exclusion limits at 95% confidence level on the branching fractions of a top quark decaying to a Z boson and an up or a charm quark are found to be B(t → Zu) < 0.022% and B(t → Zc) < 0.049%.
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 associated production of a Z boson with a single top quark and for tZ flavour-changing interactions in pp collisions at √s=8 TeV
title_short	Search for associated production of a Z boson with a single top quark and for tZ flavour-changing interactions in pp collisions at √s=8 TeV
title_full	Search for associated production of a Z boson with a single top quark and for tZ flavour-changing interactions in pp collisions at √s=8 TeV
title_fullStr	Search for associated production of a Z boson with a single top quark and for tZ flavour-changing interactions in pp collisions at √s=8 TeV
title_full_unstemmed	Search for associated production of a Z boson with a single top quark and for tZ flavour-changing interactions in pp collisions at √s=8 TeV
title_sort	search for associated production of a z boson with a single top quark and for tz flavour-changing interactions in pp collisions at √s=8 tev
publisher	Springer Nature
publishDate	2017
url	http://irep.iium.edu.my/63060/ http://irep.iium.edu.my/63060/ http://irep.iium.edu.my/63060/ http://irep.iium.edu.my/63060/1/63060_earch%20for%20associated%20production%20of%20a%20Z%20boson_article.pdf http://irep.iium.edu.my/63060/2/63060_earch%20for%20associated%20production%20of%20a%20Z%20boson_scopus.pdf
first_indexed	2023-09-18T21:29:25Z
last_indexed	2023-09-18T21:29:25Z
_version_	1777412410923024384

Search for associated production of a Z boson with a single top quark and for tZ flavour-changing interactions in pp collisions at √s=8 TeV

Similar Items