dc.contributor.author | Sirunyan, A. M. | |
dc.contributor.author | Sanders, Stephen J. | |
dc.contributor.author | CMS Collaboration | |
dc.date.accessioned | 2021-01-11T19:21:42Z | |
dc.date.available | 2021-01-11T19:21:42Z | |
dc.date.issued | 2019-04-29 | |
dc.identifier.citation | Sirunyan, 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/s10052-019-6863-8 | en_US |
dc.identifier.uri | http://hdl.handle.net/1808/31089 | |
dc.description | This work is licensed under a Creative Commons Attribution 4.0 International License. | en_US |
dc.description.abstract | A 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.publisher | SpringerOpen | en_US |
dc.rights | © CERN for the benefit of the CMS collaboration 2019. | en_US |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | en_US |
dc.title | 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 | en_US |
dc.type | Article | en_US |
kusw.kuauthor | Sanders, Stephen J. | |
kusw.kudepartment | Physics and Astronomy | en_US |
dc.identifier.doi | 10.1140/epjc/s10052-019-6863-8 | en_US |
kusw.oaversion | Scholarly/refereed, publisher version | en_US |
kusw.oapolicy | This item meets KU Open Access policy criteria. | en_US |
dc.rights.accessrights | openAccess | en_US |