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Полная запись метаданных
Поле DC | Значение | Язык |
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dc.contributor.author | Drugakov, V. | - |
dc.contributor.author | Mossolov, V. | - |
dc.contributor.author | Suarez Gonzalez, J. | - |
dc.contributor.author | CMS collaboration | - |
dc.date.accessioned | 2022-10-27T13:28:46Z | - |
dc.date.available | 2022-10-27T13:28:46Z | - |
dc.date.issued | 2020 | - |
dc.identifier.citation | J High Energy Phys 2020;2020(7) | ru |
dc.identifier.uri | https://elib.bsu.by/handle/123456789/288070 | - |
dc.description.abstract | 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.] | ru |
dc.description.sponsorship | Horizon 2020 Framework Programme (H2020).675440, 752730, 765710 | ru |
dc.language.iso | en | ru |
dc.publisher | Springe | ru |
dc.rights | info:eu-repo/semantics/openAccess | ru |
dc.subject | ЭБ БГУ::ЕСТЕСТВЕННЫЕ И ТОЧНЫЕ НАУКИ::Физика | ru |
dc.subject | ЭБ БГУ::ТЕХНИЧЕСКИЕ И ПРИКЛАДНЫЕ НАУКИ. ОТРАСЛИ ЭКОНОМИКИ::Ядерная техника | ru |
dc.title | Measurement of the cross section for t t ¯ production with additional jets and b jets in pp collisions at √s = 13 TeV | ru |
dc.type | article | ru |
dc.rights.license | CC BY 4.0 | ru |
dc.identifier.DOI | 10.1007/JHEP07(2020)125 | - |
dc.identifier.scopus | 85088526760 | - |
Располагается в коллекциях: | Статьи НИУ «Институт ядерных проблем» |
Полный текст документа:
Файл | Описание | Размер | Формат | |
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JHEP07(2020)125.pdf | 647,73 kB | Adobe PDF | Открыть |
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