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dc.contributor.authorSirunyan, A. M.
dc.contributor.authorSanders, Stephen J.
dc.contributor.authorCMS Collaboration
dc.date.accessioned2021-01-11T19:21:42Z
dc.date.available2021-01-11T19:21:42Z
dc.date.issued2019-04-29
dc.identifier.citationSirunyan, A.M., Tumasyan, A., Adam, W. et al. Measurement of the tt⎯⎯ production cross section, the top quark mass, and the strong coupling constant using dilepton events in pp collisions at 𝑠√=13TeV. Eur. Phys. J. C 79, 368 (2019). https://doi.org/10.1140/epjc/s10052-019-6863-8en_US
dc.identifier.urihttp://hdl.handle.net/1808/31089
dc.descriptionThis work is licensed under a Creative Commons Attribution 4.0 International License.en_US
dc.description.abstractA measurement of the top quark–antiquark pair production cross section 𝜎tt⎯⎯ in proton–proton collisions at a centre-of-mass energy of 13TeV is presented. The data correspond to an integrated luminosity of 35.9fb−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 𝑚MCt=172.5GeV 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-to-leading order. A simultaneous fit of the cross section and the top quark mass parameter in the POWHEG simulation is performed. The measured value of 𝑚MCt=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.en_US
dc.publisherSpringerOpenen_US
dc.rights© CERN for the benefit of the CMS collaboration 2019.en_US
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en_US
dc.titleMeasurement of the tt⎯⎯ production cross section, the top quark mass, and the strong coupling constant using dilepton events in pp collisions at 𝑠√=13TeVen_US
dc.typeArticleen_US
kusw.kuauthorSanders, Stephen J.
kusw.kudepartmentPhysics and Astronomyen_US
dc.identifier.doi10.1140/epjc/s10052-019-6863-8en_US
kusw.oaversionScholarly/refereed, publisher versionen_US
kusw.oapolicyThis item meets KU Open Access policy criteria.en_US
dc.rights.accessrightsopenAccessen_US


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© CERN for the benefit of the CMS collaboration 2019.
Except where otherwise noted, this item's license is described as: © CERN for the benefit of the CMS collaboration 2019.