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Article: Measurement of the tt¯ production cross-section and lepton differential distributions in eμ dilepton events from pp collisions at √s = 13 TeV with the ATLAS detector

TitleMeasurement of the tt¯ production cross-section and lepton differential distributions in eμ dilepton events from pp collisions at √s = 13 TeV with the ATLAS detector
Authors
Issue Date2020
PublisherSpringer Verlag (Germany): SCOAP3. The Journal's web site is located at http://epjc.edpsciences.org
Citation
The European Physical Journal C: Particles and Fields, 2020, v. 80 n. 6, article no. 528 How to Cite?
AbstractThe inclusive top quark pair (tt¯) production cross-section σtt¯ has been measured in proton–proton collisions at √s=13TeV, using 36.1 fb−1 of data collected in 2015–2016 by the ATLAS experiment at the LHC. Using events with an opposite-charge eμ pair and b-tagged jets, the cross-section is measured to be: σtt¯=826.4±3.6(stat) ±11.5(syst) ±15.7(lumi) ±1.9(beam)pb, where the uncertainties reflect the limited size of the data sample, experimental and theoretical systematic effects, the integrated luminosity, and the LHC beam energy, giving a total uncertainty of 2.4%. The result is consistent with theoretical QCD calculations at next-to-next-to-leading order. It is used to determine the top quark pole mass via the dependence of the predicted cross-section on mpolet, giving mpolet=173.1+2.0−2.1GeV. It is also combined with measurements at √s=7TeV and √s=8TeV to derive ratios and double ratios of tt¯ and Z cross-sections at different energies. The same event sample is used to measure absolute and normalised differential cross-sections as functions of single-lepton and dilepton kinematic variables, and the results are compared with predictions from various Monte Carlo event generators.
Persistent Identifierhttp://hdl.handle.net/10722/285451
ISSN
2020 Impact Factor: 4.59
2020 SCImago Journal Rankings: 1.938
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorATLAS Collaboration-
dc.contributor.authorLo, CY-
dc.contributor.authorParedes Hernandez, D-
dc.contributor.authorTu, Y-
dc.date.accessioned2020-08-18T03:53:33Z-
dc.date.available2020-08-18T03:53:33Z-
dc.date.issued2020-
dc.identifier.citationThe European Physical Journal C: Particles and Fields, 2020, v. 80 n. 6, article no. 528-
dc.identifier.issn1434-6044-
dc.identifier.urihttp://hdl.handle.net/10722/285451-
dc.description.abstractThe inclusive top quark pair (tt¯) production cross-section σtt¯ has been measured in proton–proton collisions at √s=13TeV, using 36.1 fb−1 of data collected in 2015–2016 by the ATLAS experiment at the LHC. Using events with an opposite-charge eμ pair and b-tagged jets, the cross-section is measured to be: σtt¯=826.4±3.6(stat) ±11.5(syst) ±15.7(lumi) ±1.9(beam)pb, where the uncertainties reflect the limited size of the data sample, experimental and theoretical systematic effects, the integrated luminosity, and the LHC beam energy, giving a total uncertainty of 2.4%. The result is consistent with theoretical QCD calculations at next-to-next-to-leading order. It is used to determine the top quark pole mass via the dependence of the predicted cross-section on mpolet, giving mpolet=173.1+2.0−2.1GeV. It is also combined with measurements at √s=7TeV and √s=8TeV to derive ratios and double ratios of tt¯ and Z cross-sections at different energies. The same event sample is used to measure absolute and normalised differential cross-sections as functions of single-lepton and dilepton kinematic variables, and the results are compared with predictions from various Monte Carlo event generators.-
dc.languageeng-
dc.publisherSpringer Verlag (Germany): SCOAP3. The Journal's web site is located at http://epjc.edpsciences.org-
dc.relation.ispartofThe European Physical Journal C: Particles and Fields-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.titleMeasurement of the tt¯ production cross-section and lepton differential distributions in eμ dilepton events from pp collisions at √s = 13 TeV with the ATLAS detector-
dc.typeArticle-
dc.identifier.emailLo, CY: samuel3@hku.hk-
dc.identifier.emailParedes Hernandez, D: dparedes@hku.hk-
dc.identifier.emailTu, Y: yanjuntu@hku.hk-
dc.identifier.authorityTu, Y=rp01971-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1140/epjc/s10052-020-7907-9-
dc.identifier.scopuseid_2-s2.0-85086475740-
dc.identifier.hkuros312796-
dc.identifier.volume80-
dc.identifier.issue6-
dc.identifier.spagearticle no. 528-
dc.identifier.epagearticle no. 528-
dc.identifier.isiWOS:000546998500003-
dc.publisher.placeGermany-
dc.identifier.issnl1434-6044-

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