Measurement of the t(t)over-bar production cross section, the top quark mass, and the strong coupling constant using dilepton events in pp collisions at root s=13TeV
A measurement of the top quark–antiquark pair production cross section σtt in proton–proton collisions at a centre-of-mass energy of 13 TeV is presented. The data correspond to an integrated luminosity of 35.9 fb−1, recorded by the CMS experiment at the CERN LHC in 2016. Dilepton events (e±μ∓, μ+...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English English English |
| Published: |
Springer New York LLC
2019
|
| Subjects: | |
| Online Access: | http://irep.iium.edu.my/79896/ http://irep.iium.edu.my/79896/1/79896_Measurement%20of%20the%20tt%20production%20cross%20section_article.pdf http://irep.iium.edu.my/79896/2/79896_Measurement%20of%20the%20tt%20production%20cross%20section_scopus.pdf http://irep.iium.edu.my/79896/3/79896_Measurement%20of%20the%20tt%20production%20cross%20section_wos.pdf |
| _version_ | 1848788867313827840 |
|---|---|
| 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. |
| building | IIUM Repository |
| collection | Online Access |
| description | A measurement of the top quark–antiquark pair
production cross section σtt in proton–proton collisions at a
centre-of-mass energy of 13 TeV is presented. The data correspond to an integrated luminosity of 35.9 fb−1, recorded
by the CMS experiment at the CERN LHC in 2016. Dilepton events (e±μ∓, μ+μ−, e+e−) are selected and the cross
section is measured from a likelihood fit. For a top quark
mass parameter in the simulation of mMC
t = 172.5 GeV the
fit yields a measured cross section σtt = 803 ± 2 (stat) ±
25 (syst) ± 20 (lumi) pb, in agreement with the expectation from the standard model calculation at next-to-next-toleading order. A simultaneous fit of the cross section and
the top quark mass parameter in the powheg simulation
is performed. The measured value of mMC
t = 172.33 ±
0.14 (stat) +0.66 −0.72 (syst) GeV is in good agreement with previous measurements. The resulting cross section is used,
together with the theoretical prediction, to determine the top
quark mass and to extract a value of the strong coupling constant with different sets of parton distribution functions. |
| first_indexed | 2025-11-14T17:47:39Z |
| format | Article |
| id | iium-79896 |
| institution | International Islamic University Malaysia |
| institution_category | Local University |
| language | English English English |
| last_indexed | 2025-11-14T17:47:39Z |
| publishDate | 2019 |
| publisher | Springer New York LLC |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | iium-798962020-07-01T04:41:10Z http://irep.iium.edu.my/79896/ Measurement of the t(t)over-bar production cross section, the top quark mass, and the strong coupling constant using dilepton events in pp collisions at root s=13TeV Sirunyan, A. M. Tumasyan, A. R. Adam, Wolfgang Ambrogi, Federico Asilar, Ece Md. Ali, Mohd. Adli Q Science (General) QC Physics A measurement of the top quark–antiquark pair production cross section σtt in proton–proton collisions at a centre-of-mass energy of 13 TeV is presented. The data correspond to an integrated luminosity of 35.9 fb−1, recorded by the CMS experiment at the CERN LHC in 2016. Dilepton events (e±μ∓, μ+μ−, e+e−) are selected and the cross section is measured from a likelihood fit. For a top quark mass parameter in the simulation of mMC t = 172.5 GeV the fit yields a measured cross section σtt = 803 ± 2 (stat) ± 25 (syst) ± 20 (lumi) pb, in agreement with the expectation from the standard model calculation at next-to-next-toleading order. A simultaneous fit of the cross section and the top quark mass parameter in the powheg simulation is performed. The measured value of mMC t = 172.33 ± 0.14 (stat) +0.66 −0.72 (syst) GeV is in good agreement with previous measurements. The resulting cross section is used, together with the theoretical prediction, to determine the top quark mass and to extract a value of the strong coupling constant with different sets of parton distribution functions. Springer New York LLC 2019-05-01 Article NonPeerReviewed application/pdf en http://irep.iium.edu.my/79896/1/79896_Measurement%20of%20the%20tt%20production%20cross%20section_article.pdf application/pdf en http://irep.iium.edu.my/79896/2/79896_Measurement%20of%20the%20tt%20production%20cross%20section_scopus.pdf application/pdf en http://irep.iium.edu.my/79896/3/79896_Measurement%20of%20the%20tt%20production%20cross%20section_wos.pdf Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Ambrogi, Federico and Asilar, Ece and Md. Ali, Mohd. Adli (2019) Measurement of the t(t)over-bar production cross section, the top quark mass, and the strong coupling constant using dilepton events in pp collisions at root s=13TeV. European Physical Journal C, 79 (5). pp. 1-36. ISSN 1434-6044 E-ISSN 1434-6052 https://link.springer.com/content/pdf/10.1140/epjc/s10052-019-6863-8.pdf 10.1140/epjc/s10052-019-6863-8 |
| 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 t(t)over-bar production cross section, the top quark mass, and the strong coupling constant using dilepton events in pp collisions at root s=13TeV |
| title | Measurement of the t(t)over-bar production cross section, the top quark mass, and the strong coupling constant using dilepton events in pp collisions at root s=13TeV |
| title_full | Measurement of the t(t)over-bar production cross section, the top quark mass, and the strong coupling constant using dilepton events in pp collisions at root s=13TeV |
| title_fullStr | Measurement of the t(t)over-bar production cross section, the top quark mass, and the strong coupling constant using dilepton events in pp collisions at root s=13TeV |
| title_full_unstemmed | Measurement of the t(t)over-bar production cross section, the top quark mass, and the strong coupling constant using dilepton events in pp collisions at root s=13TeV |
| title_short | Measurement of the t(t)over-bar production cross section, the top quark mass, and the strong coupling constant using dilepton events in pp collisions at root s=13TeV |
| title_sort | measurement of the t(t)over-bar production cross section, the top quark mass, and the strong coupling constant using dilepton events in pp collisions at root s=13tev |
| topic | Q Science (General) QC Physics |
| url | http://irep.iium.edu.my/79896/ http://irep.iium.edu.my/79896/ http://irep.iium.edu.my/79896/ http://irep.iium.edu.my/79896/1/79896_Measurement%20of%20the%20tt%20production%20cross%20section_article.pdf http://irep.iium.edu.my/79896/2/79896_Measurement%20of%20the%20tt%20production%20cross%20section_scopus.pdf http://irep.iium.edu.my/79896/3/79896_Measurement%20of%20the%20tt%20production%20cross%20section_wos.pdf |