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ATLAS b-jet identification performance and efficiency measurement with tt¯ events in pp collisions at √s=13 TeV

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dc.contributor.authorAad, G.
dc.contributor.authorAbbott, B.
dc.contributor.authorAbbott, D. C.
dc.contributor.authorAbud, A. A.
dc.contributor.authorBelotskiy, K.
dc.contributor.authorBelyaev, N. L.
dc.contributor.authorBulekov, O.
dc.contributor.authorKantserov, V. A.
dc.contributor.authorKurova, A.
dc.contributor.authorPonomarenko, D.
dc.contributor.authorProklova, N.
dc.contributor.authorRomaniouk, A.
dc.contributor.authorSmirnov, N.
dc.contributor.authorSmirnov, S. Y.
dc.contributor.authorSmirnov, Y.
dc.contributor.authorSoldatov, E. Y.
dc.contributor.authorTikhomirov, V. O.
dc.contributor.authorTimoshenko, S.
dc.contributor.authorVorobev, K.
dc.contributor.authorБелоцкий, Константин Михайлович
dc.contributor.authorБулеков, Олег Владимирович
dc.contributor.authorКурова, Анастасия Сергеевна
dc.contributor.authorРоманюк, Анатолий Самсонович
dc.contributor.authorСмирнов, Сергей Юрьевич
dc.contributor.authorСмирнов, Юрий Сергеевич
dc.contributor.authorСолдатов, Евгений Юрьевич
dc.contributor.authorТихомиров, Владимир Олегович
dc.contributor.authorТимошенко, Сергей Леонидович
dc.contributor.authorВоробьёв, Константин Александрович
dc.date.accessioned2024-11-21T15:12:58Z
dc.date.available2024-11-21T15:12:58Z
dc.date.issued2019
dc.description.abstract© 2019, CERN for the benefit of the ATLAS collaboration.The algorithms used by the ATLAS Collaboration during Run 2 of the Large Hadron Collider to identify jets containing b-hadrons are presented. The performance of the algorithms is evaluated in the simulation and the efficiency with which these algorithms identify jets containing b-hadrons is measured in collision data. The measurement uses a likelihood-based method in a sample highly enriched in tt¯ events. The topology of the t→ Wb decays is exploited to simultaneously measure both the jet flavour composition of the sample and the efficiency in a transverse momentum range from 20 to 600 GeV. The efficiency measurement is subsequently compared with that predicted by the simulation. The data used in this measurement, corresponding to a total integrated luminosity of 80.5 fb - 1, were collected in proton–proton collisions during the years 2015–2017 at a centre-of-mass energy s= 13 TeV. By simultaneously extracting both the efficiency and jet flavour composition, this measurement significantly improves the precision compared to previous results, with uncertainties ranging from 1 to 8% depending on the jet transverse momentum.
dc.identifier.citationATLAS b-jet identification performance and efficiency measurement with tt¯ events in pp collisions at √s=13 TeV / Aad, G. [et al.] // European Physical Journal C. - 2019. - 79. - № 11. - 10.1140/epjc/s10052-019-7450-8
dc.identifier.doi10.1140/epjc/s10052-019-7450-8
dc.identifier.urihttps://www.doi.org/10.1140/epjc/s10052-019-7450-8
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85075996723&origin=resultslist
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000505550300004
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/18985
dc.relation.ispartofEuropean Physical Journal C
dc.titleATLAS b-jet identification performance and efficiency measurement with tt¯ events in pp collisions at √s=13 TeV
dc.typeArticle
dspace.entity.typePublication
oaire.citation.issue11
oaire.citation.volume79
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