1 Ocak 2023 Dergi makalesi Açık Erişim

CERN İşbirliği

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{
  "@context": "https://schema.org/", 
  "@id": 264792, 
  "@type": "ScholarlyArticle", 
  "creator": [
    {
      "@type": "Person", 
      "affiliation": "CERN", 
      "name": "CERN \u0130\u015fbirli\u011fi"
    }
  ], 
  "datePublished": "2023-01-01", 
  "description": "<p>This paper presents a measurement of b-jet production in Pb+Pb and pp collisions at     $\\sqrt{{s}_{{}_{\\text{NN}}}}=5.02$   TeV with the ATLAS detector at the LHC. The measurement uses 260     ${\\text{pb}}^{-1}$   of pp collisions collected in 2017 and 1.4     ${\\text{nb}}^{-1}$   of Pb+Pb collisions collected in 2018. In both collision systems, jets are reconstructed via the anti-    ${k}_{t}$   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     $R=0.2$   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     ${\\text{nb}}^{-1}$   of Pb+Pb collisions collected in 2018 and the same pp collision data as the b-jet measurement. The nuclear modification factor,     ${R}_{\\text{AA}}$  , is calculated for both b-jets and inclusive jets with     $R=0.2$   over the transverse momentum range of 80\u2013290 GeV. The nuclear modification factor for b-jets decreases from peripheral to central collisions. The ratio of the b-jet     ${R}_{\\text{AA}}$   to inclusive jet     ${R}_{\\text{AA}}$   is also presented and suggests that the     ${R}_{\\text{AA}}$   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.</p>", 
  "headline": "Measurement of the nuclear modification factor of b-jets in 5.02 TeV Pb+Pb collisions with the ATLAS detector", 
  "identifier": 264792, 
  "image": "https://aperta.ulakbim.gov.tr/static/img/logo/aperta_logo_with_icon.svg", 
  "license": "http://www.opendefinition.org/licenses/cc-by", 
  "name": "Measurement of the nuclear modification factor of b-jets in 5.02 TeV Pb+Pb collisions with the ATLAS detector", 
  "url": "https://aperta.ulakbim.gov.tr/record/264792"
}