Measurements of tt¯differential cross sections in proton-proton collisions at √s=13 TeV using events containing two leptons

Measurements of differential top quark pair tt cross sections using events produced in proton-proton collisions at a centre-of-mass energy of 13 TeV containing two oppositely charged leptons are presented. The data were recorded by the CMS experiment at the CERN LHC in 2016 and correspond to an 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 English
Published:	Springer Verlag 2019
Subjects:	Q Science (General) QC Physics
Online Access:	http://irep.iium.edu.my/71769/ http://irep.iium.edu.my/71769/ http://irep.iium.edu.my/71769/ http://irep.iium.edu.my/71769/1/71769_Measurements%20of%20t%28t%29over-bar%20differential_article.pdf http://irep.iium.edu.my/71769/2/71769_Measurements%20of%20t%28t%29over-bar%20differential_wos.pdf http://irep.iium.edu.my/71769/3/71769_Measurements%20of%20t%28t%29over-bar%20differential_scopus.pdf

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spelling	iium-717692019-07-12T02:31:42Z http://irep.iium.edu.my/71769/ Measurements of tt¯differential cross sections in proton-proton collisions at √s=13 TeV using events containing two leptons Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Ambrogi, Federico Asilar, Ece Md. Ali, Mohd. Adli Q Science (General) QC Physics Measurements of differential top quark pair tt cross sections using events produced in proton-proton collisions at a centre-of-mass energy of 13 TeV containing two oppositely charged leptons are presented. The data were recorded by the CMS experiment at the CERN LHC in 2016 and correspond to an integrated luminosity of 35.9 fb−1 . The differential cross sections are presented as functions of kinematic observables of the top quarks and their decay products, the tt system, and the total number of jets in the event. The differential cross sections are defined both with particle-level objects in a fiducial phase space close to that of the detector acceptance and with parton-level top quarks in the full phase space. All results are compared with standard model predictions from Monte Carlo simulations with next-to-leading-order (NLO) accuracy in quantum chromodynamics (QCD) at matrix-element level interfaced to parton-shower simulations. Where possible, parton-level results are compared to calculations with beyond-NLO precision in QCD. Significant disagreement is observed between data and all predictions for several observables. The measurements are used to constrain the top quark chromomagnetic dipole moment in an effective field theory framework at NLO in QCD and to extract tt and leptonic charge asymmetries. Springer Verlag 2019-02-01 Article PeerReviewed application/pdf en http://irep.iium.edu.my/71769/1/71769_Measurements%20of%20t%28t%29over-bar%20differential_article.pdf application/pdf en http://irep.iium.edu.my/71769/2/71769_Measurements%20of%20t%28t%29over-bar%20differential_wos.pdf application/pdf en http://irep.iium.edu.my/71769/3/71769_Measurements%20of%20t%28t%29over-bar%20differential_scopus.pdf Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Ambrogi, Federico and Asilar, Ece and Md. Ali, Mohd. Adli (2019) Measurements of tt¯differential cross sections in proton-proton collisions at √s=13 TeV using events containing two leptons. Journal of High Energy Physics, 2019 (2). pp. 1-109. ISSN 1126-6708 E-ISSN 1029-8479 https://link.springer.com/content/pdf/10.1007%2FJHEP02%282019%29149.pdf 10.1007/JHEP02(2019)149
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 Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Ambrogi, Federico Asilar, Ece Md. Ali, Mohd. Adli Measurements of tt¯differential cross sections in proton-proton collisions at √s=13 TeV using events containing two leptons
description	Measurements of differential top quark pair tt cross sections using events produced in proton-proton collisions at a centre-of-mass energy of 13 TeV containing two oppositely charged leptons are presented. The data were recorded by the CMS experiment at the CERN LHC in 2016 and correspond to an integrated luminosity of 35.9 fb−1 . The differential cross sections are presented as functions of kinematic observables of the top quarks and their decay products, the tt system, and the total number of jets in the event. The differential cross sections are defined both with particle-level objects in a fiducial phase space close to that of the detector acceptance and with parton-level top quarks in the full phase space. All results are compared with standard model predictions from Monte Carlo simulations with next-to-leading-order (NLO) accuracy in quantum chromodynamics (QCD) at matrix-element level interfaced to parton-shower simulations. Where possible, parton-level results are compared to calculations with beyond-NLO precision in QCD. Significant disagreement is observed between data and all predictions for several observables. The measurements are used to constrain the top quark chromomagnetic dipole moment in an effective field theory framework at NLO in QCD and to extract tt and leptonic charge asymmetries.
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	Measurements of tt¯differential cross sections in proton-proton collisions at √s=13 TeV using events containing two leptons
title_short	Measurements of tt¯differential cross sections in proton-proton collisions at √s=13 TeV using events containing two leptons
title_full	Measurements of tt¯differential cross sections in proton-proton collisions at √s=13 TeV using events containing two leptons
title_fullStr	Measurements of tt¯differential cross sections in proton-proton collisions at √s=13 TeV using events containing two leptons
title_full_unstemmed	Measurements of tt¯differential cross sections in proton-proton collisions at √s=13 TeV using events containing two leptons
title_sort	measurements of tt¯differential cross sections in proton-proton collisions at √s=13 tev using events containing two leptons
publisher	Springer Verlag
publishDate	2019
url	http://irep.iium.edu.my/71769/ http://irep.iium.edu.my/71769/ http://irep.iium.edu.my/71769/ http://irep.iium.edu.my/71769/1/71769_Measurements%20of%20t%28t%29over-bar%20differential_article.pdf http://irep.iium.edu.my/71769/2/71769_Measurements%20of%20t%28t%29over-bar%20differential_wos.pdf http://irep.iium.edu.my/71769/3/71769_Measurements%20of%20t%28t%29over-bar%20differential_scopus.pdf
first_indexed	2023-09-18T21:41:46Z
last_indexed	2023-09-18T21:41:46Z
_version_	1777413187615850496

Measurements of tt¯differential cross sections in proton-proton collisions at √s=13 TeV using events containing two leptons

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