Combinations of single-top-quark production cross-section measurements and |f LV Vtb| determinations at √s = 7 and 8 TeV with the ATLAS and CMS experiments

This paper presents the combinations of single-top-quark production crosssection measurements by the ATLAS and CMS Collaborations, using data from LHC proton–proton collisions at √ s = 7 and 8 TeV corresponding to integrated luminosities of 1.17 to 5.1 fb−1 at √ s = 7 TeV and 12.2 to 20.3 fb−1 a...

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Main Authors:	Aaboud, M., Aad, Georges, Abbott, Brad K., Abbott, D. C., Abdinov, O. B., 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/79576/ http://irep.iium.edu.my/79576/ http://irep.iium.edu.my/79576/ http://irep.iium.edu.my/79576/1/79576_Combinations%20of%20single-top-quark%20production_article.pdf http://irep.iium.edu.my/79576/2/79576_Combinations%20of%20single-top-quark%20production_scopus.pdf http://irep.iium.edu.my/79576/3/79576_Combinations%20of%20single-top-quark%20production_wos.pdf

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spelling	iium-795762020-03-16T07:53:05Z http://irep.iium.edu.my/79576/ Combinations of single-top-quark production cross-section measurements and \|f LV Vtb\| determinations at √s = 7 and 8 TeV with the ATLAS and CMS experiments Aaboud, M. Aad, Georges Abbott, Brad K. Abbott, D. C. Abdinov, O. B. Md. Ali, Mohd. Adli Q Science (General) QC Physics This paper presents the combinations of single-top-quark production crosssection measurements by the ATLAS and CMS Collaborations, using data from LHC proton–proton collisions at √ s = 7 and 8 TeV corresponding to integrated luminosities of 1.17 to 5.1 fb−1 at √ s = 7 TeV and 12.2 to 20.3 fb−1 at √ s = 8 TeV. These combinations are performed per centre-of-mass energy and for each production mode: tchannel, tW, and s-channel. The combined t-channel cross-sections are 67.5 ± 5.7 pb and 87.7 ± 5.8 pb at √ s = 7 and 8 TeV respectively. The combined tW cross-sections are 16.3 ± 4.1 pb and 23.1 ± 3.6 pb at √ s = 7 and 8 TeV respectively. For the schannel cross-section, the combination yields 4.9 ± 1.4 pb at √ s = 8 TeV. The square of the magnitude of the CKM matrix element Vtb multiplied by a form factor fLV is determined for each production mode and centre-of-mass energy, using the ratio of the measured cross-section to its theoretical prediction. It is assumed that the top-quark-related CKM matrix elements obey the relation \|Vtd\|, \|Vts\| � \|Vtb\|. All the \|fLVVtb\| 2 determinations, extracted from individual ratios at √ s = 7 and 8 TeV, are combined, resulting in \|fLVVtb\| = 1.02 ± 0.04 (meas.) ± 0.02 (theo.). All combined measurements are consistent with their corresponding Standard Model predictions. Springer Nature 2019-05-01 Article PeerReviewed application/pdf en http://irep.iium.edu.my/79576/1/79576_Combinations%20of%20single-top-quark%20production_article.pdf application/pdf en http://irep.iium.edu.my/79576/2/79576_Combinations%20of%20single-top-quark%20production_scopus.pdf application/pdf en http://irep.iium.edu.my/79576/3/79576_Combinations%20of%20single-top-quark%20production_wos.pdf Aaboud, M. and Aad, Georges and Abbott, Brad K. and Abbott, D. C. and Abdinov, O. B. and Md. Ali, Mohd. Adli (2019) Combinations of single-top-quark production cross-section measurements and \|f LV Vtb\| determinations at √s = 7 and 8 TeV with the ATLAS and CMS experiments. Journal of High Energy Physics, 2019 (5). pp. 1-80. ISSN 1029-8479 https://link.springer.com/content/pdf/10.1007/JHEP05(2019)088.pdf 10.1007/JHEP05(2019)088
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 Aaboud, M. Aad, Georges Abbott, Brad K. Abbott, D. C. Abdinov, O. B. Md. Ali, Mohd. Adli Combinations of single-top-quark production cross-section measurements and \|f LV Vtb\| determinations at √s = 7 and 8 TeV with the ATLAS and CMS experiments
description	This paper presents the combinations of single-top-quark production crosssection measurements by the ATLAS and CMS Collaborations, using data from LHC proton–proton collisions at √ s = 7 and 8 TeV corresponding to integrated luminosities of 1.17 to 5.1 fb−1 at √ s = 7 TeV and 12.2 to 20.3 fb−1 at √ s = 8 TeV. These combinations are performed per centre-of-mass energy and for each production mode: tchannel, tW, and s-channel. The combined t-channel cross-sections are 67.5 ± 5.7 pb and 87.7 ± 5.8 pb at √ s = 7 and 8 TeV respectively. The combined tW cross-sections are 16.3 ± 4.1 pb and 23.1 ± 3.6 pb at √ s = 7 and 8 TeV respectively. For the schannel cross-section, the combination yields 4.9 ± 1.4 pb at √ s = 8 TeV. The square of the magnitude of the CKM matrix element Vtb multiplied by a form factor fLV is determined for each production mode and centre-of-mass energy, using the ratio of the measured cross-section to its theoretical prediction. It is assumed that the top-quark-related CKM matrix elements obey the relation \|Vtd\|, \|Vts\| � \|Vtb\|. All the \|fLVVtb\| 2 determinations, extracted from individual ratios at √ s = 7 and 8 TeV, are combined, resulting in \|fLVVtb\| = 1.02 ± 0.04 (meas.) ± 0.02 (theo.). All combined measurements are consistent with their corresponding Standard Model predictions.
format	Article
author	Aaboud, M. Aad, Georges Abbott, Brad K. Abbott, D. C. Abdinov, O. B. Md. Ali, Mohd. Adli
author_facet	Aaboud, M. Aad, Georges Abbott, Brad K. Abbott, D. C. Abdinov, O. B. Md. Ali, Mohd. Adli
author_sort	Aaboud, M.
title	Combinations of single-top-quark production cross-section measurements and \|f LV Vtb\| determinations at √s = 7 and 8 TeV with the ATLAS and CMS experiments
title_short	Combinations of single-top-quark production cross-section measurements and \|f LV Vtb\| determinations at √s = 7 and 8 TeV with the ATLAS and CMS experiments
title_full	Combinations of single-top-quark production cross-section measurements and \|f LV Vtb\| determinations at √s = 7 and 8 TeV with the ATLAS and CMS experiments
title_fullStr	Combinations of single-top-quark production cross-section measurements and \|f LV Vtb\| determinations at √s = 7 and 8 TeV with the ATLAS and CMS experiments
title_full_unstemmed	Combinations of single-top-quark production cross-section measurements and \|f LV Vtb\| determinations at √s = 7 and 8 TeV with the ATLAS and CMS experiments
title_sort	combinations of single-top-quark production cross-section measurements and \|f lv vtb\| determinations at √s = 7 and 8 tev with the atlas and cms experiments
publisher	Springer Nature
publishDate	2019
url	http://irep.iium.edu.my/79576/ http://irep.iium.edu.my/79576/ http://irep.iium.edu.my/79576/ http://irep.iium.edu.my/79576/1/79576_Combinations%20of%20single-top-quark%20production_article.pdf http://irep.iium.edu.my/79576/2/79576_Combinations%20of%20single-top-quark%20production_scopus.pdf http://irep.iium.edu.my/79576/3/79576_Combinations%20of%20single-top-quark%20production_wos.pdf
first_indexed	2023-09-18T21:51:35Z
last_indexed	2023-09-18T21:51:35Z
_version_	1777413804627329024

Combinations of single-top-quark production cross-section measurements and |f LV Vtb| determinations at √s = 7 and 8 TeV with the ATLAS and CMS experiments

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