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.article.number438
dc.catalogadorcrc
dc.contributor.authorAad, G.
dc.contributor.authorAbbott, B.
dc.contributor.authorAbbott, D. C.
dc.contributor.authorAbeling, K.
dc.contributor.authorAbidi, S. H.
dc.contributor.authorZhukov, K.
dc.contributor.authorAbusleme Hoffman, Ángel Christian
dc.contributor.authorDíaz, Marco A.
dc.contributor.authorGaray Walls, Francisca
dc.contributor.otherATLAS Collaboration
dc.date.accessioned2023-05-29T14:46:12Z
dc.date.available2023-05-29T14:46:12Z
dc.date.issued2023
dc.date.updated2023-05-28T00:03:31Z
dc.description.abstractAbstract This paper presents a measurement of b-jet production in Pb+Pb and pp collisions at $$\sqrt{s_{_\text {NN}}}=5.02$$ s NN = 5.02  TeV with the ATLAS detector at the LHC. The measurement uses 260  $$\text {pb}^{-1}$$ pb - 1 of pp collisions collected in 2017 and 1.4  $$\text {nb}^{-1}$$ nb - 1 of Pb+Pb collisions collected in 2018. In both collision systems, jets are reconstructed via the anti- $$k_{t}$$ k t 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 $$R= 0.2$$ R = 0.2 and $$R= 0.4$$ R = 0.4 , and only $$R= 0.2$$ R = 0.2 jets are used in Pb+Pb collisions. For comparison, inclusive $$R= 0.2$$ R = 0.2 jets are also measured using 1.7  $$\text {nb}^{-1}$$ nb - 1 of Pb+Pb collisions collected in 2018 and the same pp collision data as the b-jet measurement. The nuclear modification factor, $$R_\text {AA}$$ R AA , is calculated for both b-jets and inclusive jets with $$R= 0.2$$ 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 $$R_\text {AA}$$ R AA to inclusive jet $$R_\text {AA}$$ R AA is also presented and suggests that the $$R_\text {AA}$$ R AA 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.
dc.fechaingreso.objetodigital2023-05-28
dc.format.extent32 páginas
dc.fuente.origenAutoarchivo
dc.identifier.citationThe European Physical Journal C. 2023 May 25;83(5):438
dc.identifier.doi10.1140/epjc/s10052-023-11427-9
dc.identifier.eissn1434-6052
dc.identifier.urihttps://doi.org/10.1140/epjc/s10052-023-11427-9
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/70493
dc.information.autorucEscuela de Ingeniería ;Abusleme Hoffman, Ángel Christian;0000-0003-0762-7204 ; 2698
dc.information.autorucInstituto de física ; Díaz, Marco A. ; 0000-0003-1258-8684;104746
dc.information.autorucInstituto de Física ; Garay Walls, Francisca ;0000-0002-6670-1104; 131813
dc.issue.numero5
dc.language.isoen
dc.nota.accesoContenido completo
dc.pagina.final32
dc.pagina.inicio1
dc.revistaThe European Physical Journal C
dc.rightsacceso abierto
dc.rights.holderCERN for the benefit of the ATLAS collaboration
dc.subject.ddc522
dc.subject.deweyAstronomíaes_ES
dc.titleMeasurement of the nuclear modification factor of b-jets in 5.02 TeV Pb+Pb collisions with the ATLAS detector
dc.typeartículo
dc.volumen83
sipa.codpersvinculados2698
sipa.codpersvinculados104746
sipa.codpersvinculados131813
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