Measurement of the cross section for top quark pair production in association with a W or Z boson in proton-proton collisions at √s=13 TeV

A measurement is performed of the cross section of top quark pair production in association with a W or Z boson using proton-proton collisions at a center-of-mass energy of 13 TeV at the LHC. The data sample corresponds to an integrated luminosity of 35.9 fb−1 , collected by the CMS experiment i...

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Main Authors:	Sirunyan, A. M., Tumasyan, A. R., Adam, Wolfgang, Ambrogi, Federico, Asilar, Ece, Md. Ali, Mohd. Adli
Format:	Article
Language:	English English
Published:	Springer Nature 2018
Subjects:	Q Science (General) QC Physics
Online Access:	http://irep.iium.edu.my/66748/ http://irep.iium.edu.my/66748/ http://irep.iium.edu.my/66748/ http://irep.iium.edu.my/66748/1/66748_Measurement%20of%20the%20cross%20section%20for%20top%20quark%20pair_article.pdf http://irep.iium.edu.my/66748/2/66748_Measurement%20of%20the%20cross%20section%20for%20top%20quark%20pair_scopus.pdf

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spelling	iium-667482018-10-10T02:02:40Z http://irep.iium.edu.my/66748/ Measurement of the cross section for top quark pair production in association with a W or Z boson in proton-proton collisions at √s=13 TeV Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Ambrogi, Federico Asilar, Ece Md. Ali, Mohd. Adli Q Science (General) QC Physics A measurement is performed of the cross section of top quark pair production in association with a W or Z boson using proton-proton collisions at a center-of-mass energy of 13 TeV at the LHC. The data sample corresponds to an integrated luminosity of 35.9 fb−1 , collected by the CMS experiment in 2016. The measurement is performed in the same-sign dilepton, three- and four-lepton final states. The production cross sections are measured to be σ(t¯tW) = 0.77+0.12 −0.11(stat)+0.13 −0.12(syst) pb and σ(t¯tZ) = 0.99+0.09 −0.08(stat)+0.12 −0.10(syst) pb. The expected (observed) signal significance for the t¯tW production in same-sign dilepton channel is found to be 4.5 (5.3) standard deviations, while for the t¯tZ production in threeand four-lepton channels both the expected and the observed significances are found to be in excess of 5 standard deviations. The results are in agreement with the standard model predictions and are used to constrain the Wilson coefficients for eight dimension-six operators describing new interactions that would modify t¯tW and t¯tZ production. Springer Nature 2018-08-01 Article PeerReviewed application/pdf en http://irep.iium.edu.my/66748/1/66748_Measurement%20of%20the%20cross%20section%20for%20top%20quark%20pair_article.pdf application/pdf en http://irep.iium.edu.my/66748/2/66748_Measurement%20of%20the%20cross%20section%20for%20top%20quark%20pair_scopus.pdf Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Ambrogi, Federico and Asilar, Ece and Md. Ali, Mohd. Adli (2018) Measurement of the cross section for top quark pair production in association with a W or Z boson in proton-proton collisions at √s=13 TeV. Journal of High Energy Physics, 2018 (8). pp. 1-49. ISSN 1029-8479 https://link.springer.com/article/10.1007%2FJHEP08%282018%29011 10.1007/JHEP08(2018)011
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 Asilar, Ece Md. Ali, Mohd. Adli Measurement of the cross section for top quark pair production in association with a W or Z boson in proton-proton collisions at √s=13 TeV
description	A measurement is performed of the cross section of top quark pair production in association with a W or Z boson using proton-proton collisions at a center-of-mass energy of 13 TeV at the LHC. The data sample corresponds to an integrated luminosity of 35.9 fb−1 , collected by the CMS experiment in 2016. The measurement is performed in the same-sign dilepton, three- and four-lepton final states. The production cross sections are measured to be σ(t¯tW) = 0.77+0.12 −0.11(stat)+0.13 −0.12(syst) pb and σ(t¯tZ) = 0.99+0.09 −0.08(stat)+0.12 −0.10(syst) pb. The expected (observed) signal significance for the t¯tW production in same-sign dilepton channel is found to be 4.5 (5.3) standard deviations, while for the t¯tZ production in threeand four-lepton channels both the expected and the observed significances are found to be in excess of 5 standard deviations. The results are in agreement with the standard model predictions and are used to constrain the Wilson coefficients for eight dimension-six operators describing new interactions that would modify t¯tW and t¯tZ production.
format	Article
author	Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Ambrogi, Federico Asilar, Ece Md. Ali, Mohd. Adli
author_facet	Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Ambrogi, Federico Asilar, Ece Md. Ali, Mohd. Adli
author_sort	Sirunyan, A. M.
title	Measurement of the cross section for top quark pair production in association with a W or Z boson in proton-proton collisions at √s=13 TeV
title_short	Measurement of the cross section for top quark pair production in association with a W or Z boson in proton-proton collisions at √s=13 TeV
title_full	Measurement of the cross section for top quark pair production in association with a W or Z boson in proton-proton collisions at √s=13 TeV
title_fullStr	Measurement of the cross section for top quark pair production in association with a W or Z boson in proton-proton collisions at √s=13 TeV
title_full_unstemmed	Measurement of the cross section for top quark pair production in association with a W or Z boson in proton-proton collisions at √s=13 TeV
title_sort	measurement of the cross section for top quark pair production in association with a w or z boson in proton-proton collisions at √s=13 tev
publisher	Springer Nature
publishDate	2018
url	http://irep.iium.edu.my/66748/ http://irep.iium.edu.my/66748/ http://irep.iium.edu.my/66748/ http://irep.iium.edu.my/66748/1/66748_Measurement%20of%20the%20cross%20section%20for%20top%20quark%20pair_article.pdf http://irep.iium.edu.my/66748/2/66748_Measurement%20of%20the%20cross%20section%20for%20top%20quark%20pair_scopus.pdf
first_indexed	2023-09-18T21:34:48Z
last_indexed	2023-09-18T21:34:48Z
_version_	1777412748951420928

Measurement of the cross section for top quark pair production in association with a W or Z boson in proton-proton collisions at √s=13 TeV

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