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Configuration and performance of the ATLAS b-jet triggers in Run 2

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dc.contributor.authorAad, G.
dc.contributor.authorAbbott, B.
dc.contributor.authorAbbott, D. C.
dc.contributor.authorAbed, Abud, A.
dc.contributor.authorBelotskiy, K.
dc.contributor.authorBelyaev, N. L.
dc.contributor.authorBulekov, O.
dc.contributor.authorKurova, A.
dc.contributor.authorPonomarenko, D.
dc.contributor.authorProklova, N.
dc.contributor.authorPyatiizbyantseva, D.
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.authorПятиизбянцева, Диана Николаевна
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.accessioned2024-11-30T00:16:07Z
dc.date.available2024-11-30T00:16:07Z
dc.date.issued2021
dc.description.abstract© 2021, The Author(s).Several improvements to the ATLAS triggers used to identify jets containing b-hadrons (b-jets) were implemented for data-taking during Run 2 of the Large Hadron Collider from 2016 to 2018. These changes include reconfiguring the b-jet trigger software to improve primary-vertex finding and allow more stable running in conditions with high pile-up, and the implementation of the functionality needed to run sophisticated taggers used by the offline reconstruction in an online environment. These improvements yielded an order of magnitude better light-flavour jet rejection for the same b-jet identification efficiency compared to the performance in Run 1 (2011–2012). The efficiency to identify b-jets in the trigger, and the conditional efficiency for b-jets that satisfy offline b-tagging requirements to pass the trigger are also measured. Correction factors are derived to calibrate the b-tagging efficiency in simulation to match that observed in data. The associated systematic uncertainties are substantially smaller than in previous measurements. In addition, b-jet triggers were operated for the first time during heavy-ion data-taking, using dedicated triggers that were developed to identify semileptonic b-hadron decays by selecting events with geometrically overlapping muons and jets.
dc.identifier.citationConfiguration and performance of the ATLAS b-jet triggers in Run 2 / Aad, G. [et al.] // European Physical Journal C. - 2021. - 81. - № 12. - 10.1140/epjc/s10052-021-09775-5
dc.identifier.doi10.1140/epjc/s10052-021-09775-5
dc.identifier.urihttps://www.doi.org/10.1140/epjc/s10052-021-09775-5
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85120958752&origin=resultslist
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/25074
dc.relation.ispartofEuropean Physical Journal C
dc.titleConfiguration and performance of the ATLAS b-jet triggers in Run 2
dc.typeArticle
dspace.entity.typePublication
oaire.citation.issue12
oaire.citation.volume81
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