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Measurement of the cross section for t t ¯ production with additional jets and b jets in pp collisions at √s = 13 TeV

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dc.contributor.authorSirunyan, A. M.
dc.contributor.authorTumasyan, A.
dc.contributor.authorAdam, W.
dc.contributor.authorAmbrogi, F.
dc.contributor.authorMatveev, V.
dc.contributor.authorBychkova, O.
dc.contributor.authorChistov, R.
dc.contributor.authorDanilov, M.
dc.contributor.authorPolikarpov, S.
dc.contributor.authorTarkovskii, E.
dc.contributor.authorМатвеев, Виктор Анатольевич
dc.contributor.authorЧистов, Руслан Николаевич
dc.contributor.authorДанилов, Михаил Владимирович
dc.contributor.authorПоликарпов, Сергей Михайлович
dc.date.accessioned2024-11-26T15:12:44Z
dc.date.available2024-11-26T15:12:44Z
dc.date.issued2020
dc.description.abstract© 2020, The Author(s).Measurements of the cross section for the production of top quark pairs in association with a pair of jets from bottom quarks (σtt ¯bb ¯) and in association with a pair of jets from quarks of any flavor or gluons (σtt ¯jj) and their ratio are presented. The data were collected in proton-proton collisions at a center-of-mass energy of 13 TeV by the CMS experiment at the LHC in 2016 and correspond to an integrated luminosity of 35.9 fb−1. The measurements are performed in a fiducial phase space and extrapolated to the full phase space, separately for the dilepton and lepton+jets channels, where lepton corresponds to either an electron or a muon. The results of the measurements in the fiducial phase space for the dilepton and lepton+jets channels, respectively, are σtt ¯jj = 2.36±0.02 (stat)±0.20 (syst) pb and 31.0±0.2 (stat)±2.9 (syst) pb, and for the cross section ratio 0.017 ± 0.001 (stat) ± 0.001 (syst) and 0.020 ± 0.001 (stat) ± 0.001 (syst). The values of σtt ¯bb ¯ are determined from the product of the σtt ¯jj and the cross section ratio, obtaining, respectively, 0.040±0.002 (stat)±0.005 (syst) pb and 0.62±0.03 (stat)±0.07 (syst) pb. These measurements are the most precise to date and are consistent, within the uncertainties, with the standard model expectations obtained using a matrix element calculation at next-to-leading order in quantum chromodynamics matched to a parton shower. [Figure not available: see fulltext.]
dc.identifier.citationMeasurement of the cross section for t t ¯ production with additional jets and b jets in pp collisions at √s = 13 TeV / Sirunyan, A.M. [et al.] // Journal of High Energy Physics. - 2020. - 2020. - № 7. - 10.1007/JHEP07(2020)125
dc.identifier.doi10.1007/JHEP07(2020)125
dc.identifier.urihttps://www.doi.org/10.1007/JHEP07(2020)125
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85088526760&origin=resultslist
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000551953500001
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/22077
dc.relation.ispartofJournal of High Energy Physics
dc.titleMeasurement of the cross section for t t ¯ production with additional jets and b jets in pp collisions at √s = 13 TeV
dc.typeArticle
dspace.entity.typePublication
oaire.citation.issue7
oaire.citation.volume2020
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