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dc.date.accessioned2019-06-14T05:19:33Z
dc.date.available2019-06-14T05:19:33Z
dc.date.created2018-09-25T10:56:05Z
dc.date.issued2018
dc.identifier.citationAaboud, Morad Aad, Georges Abbott, Brad Abdinov, Ovsat Bahram oglu Abeloos, Baptiste Abhayasinghe, Deshan Kavishka Abidi, Syed Haider AbouZeid, Hass Abraham, Nadine L. Abramowicz, Halina Buanes, Trygve Eigen, Gerald Fomin, Nikolai Lipniacka, Anna Martin dit Latour, Bertrand Mæland, Steffen Stugu, Bjarne Yang, Zongchang Zalieckas, Justas Bugge, Magnar Kopangen Cameron, David Gordon Catmore, James Richard Feigl, Simon Franconi, Laura Garonne, Vincent Gramstad, Eirik Hellesund, Simen Morisbak, Vanja Oppen, Henrik Ould-Saada, Farid Pedersen, Maiken Read, Alexander Lincoln Røhne, Ole Myren Sandaker, Heidi Serfon, Cédric Stapnes, Steinar Vadla, Knut Oddvar Høie Abreu, Henso Abulaiti, Yiming Acharya, Bobby S. Adachi, Shunsuke Adamczyk, Leszek Adelman, Jareed Adersberger, Michael Adigüzel, Aytül Adye, Tim Affolder, Anthony Allen Afik, Yoav Agheorghiesei, Catalin Aguilar Saavedra, Juan Antonio ATLAS, Collaboration . Measurements of b-jet tagging efficiency with the ATLAS detector using tt¯ events at √s = 13 TeV. Journal of High Energy Physics (JHEP). 2018, 2018:89, 1-47
dc.identifier.urihttp://hdl.handle.net/10852/68324
dc.description.abstractThe efficiency to identify jets containing b-hadrons (b-jets) is measured using a high purity sample of dileptonic top quark-antiquark pairs (tt¯) selected from the 36.1 fb−1 of data collected by the ATLAS detector in 2015 and 2016 from proton-proton collisions produced by the Large Hadron Collider at a centre-of-mass energy √ s = 13 TeV. Two methods are used to extract the efficiency from tt¯ events, a combinatorial likelihood approach and a tag-and-probe method. A boosted decision tree, not using b-tagging information, is used to select events in which two b-jets are present, which reduces the dominant uncertainty in the modelling of the flavour of the jets. The efficiency is extracted for jets in a transverse momentum range from 20 to 300 GeV, with data-to-simulation scale factors calculated by comparing the efficiency measured using collision data to that predicted by the simulation. The two methods give compatible results, and achieve a similar level of precision, measuring data-to-simulation scale factors close to unity with uncertainties ranging from 2% to 12% depending on the jet transverse momentum.
dc.languageEN
dc.publisherInstitute of Physics Publishing (IOPP)
dc.rightsAttribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.titleMeasurements of b-jet tagging efficiency with the ATLAS detector using tt¯ events at √s = 13 TeV
dc.typeJournal article
dc.creator.authorAaboud, Morad
dc.creator.authorAad, Georges
dc.creator.authorAbbott, Brad
dc.creator.authorAbdinov, Ovsat Bahram oglu
dc.creator.authorAbeloos, Baptiste
dc.creator.authorAbhayasinghe, Deshan Kavishka
dc.creator.authorAbidi, Syed Haider
dc.creator.authorAbouZeid, Hass
dc.creator.authorAbraham, Nadine L.
dc.creator.authorAbramowicz, Halina
dc.creator.authorBuanes, Trygve
dc.creator.authorEigen, Gerald
dc.creator.authorFomin, Nikolai
dc.creator.authorLipniacka, Anna
dc.creator.authorMartin dit Latour, Bertrand
dc.creator.authorMæland, Steffen
dc.creator.authorStugu, Bjarne
dc.creator.authorYang, Zongchang
dc.creator.authorZalieckas, Justas
dc.creator.authorBugge, Magnar Kopangen
dc.creator.authorCameron, David Gordon
dc.creator.authorCatmore, James Richard
dc.creator.authorFeigl, Simon
dc.creator.authorFranconi, Laura
dc.creator.authorGaronne, Vincent
dc.creator.authorGramstad, Eirik
dc.creator.authorHellesund, Simen
dc.creator.authorMorisbak, Vanja
dc.creator.authorOppen, Henrik
dc.creator.authorOuld-Saada, Farid
dc.creator.authorPedersen, Maiken
dc.creator.authorRead, Alexander Lincoln
dc.creator.authorRøhne, Ole Myren
dc.creator.authorSandaker, Heidi
dc.creator.authorSerfon, Cédric
dc.creator.authorStapnes, Steinar
dc.creator.authorVadla, Knut Oddvar Høie
dc.creator.authorAbreu, Henso
dc.creator.authorAbulaiti, Yiming
dc.creator.authorAcharya, Bobby S.
dc.creator.authorAdachi, Shunsuke
dc.creator.authorAdamczyk, Leszek
dc.creator.authorAdelman, Jareed
dc.creator.authorAdersberger, Michael
dc.creator.authorAdigüzel, Aytül
dc.creator.authorAdye, Tim
dc.creator.authorAffolder, Anthony Allen
dc.creator.authorAfik, Yoav
dc.creator.authorAgheorghiesei, Catalin
dc.creator.authorAguilar Saavedra, Juan Antonio
dc.creator.authorATLAS, Collaboration
cristin.unitcode185,15,4,0
cristin.unitnameFysisk institutt
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode2
dc.identifier.cristin1613270
dc.identifier.bibliographiccitationinfo:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal of High Energy Physics (JHEP)&rft.volume=2018:89&rft.spage=1&rft.date=2018
dc.identifier.jtitleJournal of High Energy Physics (JHEP)
dc.identifier.volume2018:89
dc.identifier.startpage1
dc.identifier.endpage47
dc.identifier.doihttp://dx.doi.org/10.1007/JHEP08(2018)089
dc.identifier.urnURN:NBN:no-71471
dc.subject.nviVDP::Kjerne- og elementærpartikkelfysikk: 431
dc.type.documentTidsskriftartikkel
dc.type.peerreviewedPeer reviewed
dc.source.issn1029-8479
dc.identifier.fulltextFulltext https://www.duo.uio.no/bitstream/handle/10852/68324/2/Aaboud2018_Article_MeasurementsOfB-jetTaggingEffi.pdf
dc.type.versionPublishedVersion
dc.relation.projectNFR/255182


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