Measurement of the nuclear modification factor of b-jets in 5.02 TeV Pb+Pb collisions with the ATLAS detector

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dc.contributor.authorAad, G.
dc.contributor.authorAbbott, B.
dc.contributor.authorAbbott, D.C.
dc.contributor.authorAbeling, K.
dc.contributor.authorAbidi, S.H.
dc.contributor.authorAboulhorma, A.
dc.contributor.authorAbramowicz, H.
dc.contributor.authorAbreu, H.
dc.contributor.authorAbulaiti, Y.
dc.contributor.authorHoffman, A. C. Abusleme
dc.contributor.authorAcharya, B.S.
dc.contributor.authorAchkar, B.
dc.date.accessioned2023-09-12T19:54:29Z
dc.date.available2023-09-12T19:54:29Z
dc.date.issued2023-05
dc.descriptionIndexación: Scopus.es
dc.description.abstractThis paper presents a measurement of b-jet production in Pb+Pb and pp collisions at sNN=5.02 TeV with the ATLAS detector at the LHC. The measurement uses 260 pb - 1 of pp collisions collected in 2017 and 1.4 nb - 1 of Pb+Pb collisions collected in 2018. In both collision systems, jets are reconstructed via the anti- kt algorithm. The b-jets are identified from a sample of jets containing muons from the semileptonic decay of b-quarks using template fits of the muon momentum relative to the jet axis. In pp collisions, b-jets are reconstructed for radius parameters R= 0.2 and R= 0.4 , and only R= 0.2 jets are used in Pb+Pb collisions. For comparison, inclusive R= 0.2 jets are also measured using 1.7 nb - 1 of Pb+Pb collisions collected in 2018 and the same pp collision data as the b-jet measurement. The nuclear modification factor, RAA , is calculated for both b-jets and inclusive jets with R= 0.2 over the transverse momentum range of 80–290 GeV. The nuclear modification factor for b-jets decreases from peripheral to central collisions. The ratio of the b-jet RAA to inclusive jet RAA is also presented and suggests that the RAA for b-jets is larger than that for inclusive jets in central Pb+Pb collisions. The measurements are compared with theoretical calculations and suggest a role for mass and colour-charge effects in partonic energy loss in heavy-ion collisions.es
dc.description.urihttps://www-scopus-com.recursosbiblioteca.unab.cl/record/display.uri?eid=2-s2.0-85160422771&origin=resultslist&sort=plf-f&src=s&nlo=&nlr=&nls=&sid=75169cfb01cfe78f62c08d793366fb80&sot=aff&sdt=cl&cluster=scofreetoread%2c%22all%22%2ct%2bscosubjabbr%2c%22ENGI%22%2ct&sl=61&s=AF-ID%28%22Universidad+Andr%c3%a9s+Bello%22+60002636%29+AND+SUBJAREA%28ENGI%29&relpos=19&citeCnt=0&searchTerm=
dc.identifier.citationEuropean Physical Journal C Open Access Volume 83, Issue 5 May 2023 Article number 438es
dc.identifier.doi10.1140/epjc/s10052-023-11427-9
dc.identifier.issn14346044
dc.identifier.urihttps://repositorio.unab.cl/xmlui/handle/ria/53157
dc.language.isoenes
dc.publisherInstitute for Ionicses
dc.rights.licenseAttribution 4.0 International (CC BY 4.0)
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectIonic Collisionses
dc.subjectQuark-Gluon Plasmaes
dc.subjectHadrones
dc.titleMeasurement of the nuclear modification factor of b-jets in 5.02 TeV Pb+Pb collisions with the ATLAS detectores
dc.typeArtículoes
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