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.authorAbeling, K.
dc.contributor.authorAbhayasinghe, D.K.
dc.contributor.authorAbidi, S.H.
dc.contributor.authorAbouZeid, O.S.
dc.contributor.authorAbraham, N.L.
dc.contributor.authorAbramowicz, H.
dc.contributor.authorAbreu, H.
dc.contributor.authorAbulaiti, Y.
dc.date.accessioned2023-10-06T20:30:26Z
dc.date.available2023-10-06T20:30:26Z
dc.date.issued2021-12
dc.descriptionIndexación: Scopus.es
dc.description.abstractSeveral 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.es
dc.description.urihttps://www-scopus-com.recursosbiblioteca.unab.cl/record/display.uri?eid=2-s2.0-85120958752&origin=resultslist&sort=plf-f&src=s&nlo=&nlr=&nls=&sid=a26f178c6348e746875a0f7d0f4ac46e&sot=aff&sdt=cl&cluster=scofreetoread%2c%22all%22%2ct&sl=34&s=AF-ID%2860002636%29+AND+SUBJAREA%28ENGI%29&relpos=131&citeCnt=5&searchTerm=
dc.identifier.citationEuropean Physical Journal C Open Access Volume 81, Issue 12 December 2021 Article number 1087es
dc.identifier.doi10.1140/epjc/s10052-021-09775-5
dc.identifier.issn14346044
dc.identifier.urihttps://repositorio.unab.cl/xmlui/handle/ria/53422
dc.language.isoenes
dc.publisherSpringer Science and Business Media Deutschland GmbHes
dc.rights.licenseCC BY 4.0 DEED
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectBosones
dc.subjectPartonses
dc.subjectHiggs Bosonses
dc.titleConfiguration and performance of the ATLAS b-jet triggers in Run 2es
dc.typeArtículoes
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