1 Ocak 2023 Dergi makalesi Açık Erişim

CERN İşbirliği

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{
  "@context": "https://schema.org/", 
  "@id": 264432, 
  "@type": "ScholarlyArticle", 
  "creator": [
    {
      "@type": "Person", 
      "affiliation": "CERN", 
      "name": "CERN \u0130\u015fbirli\u011fi"
    }
  ], 
  "datePublished": "2023-01-01", 
  "description": "<p>Parton energy loss in the quark\u2013gluon plasma (QGP) is studied with a measurement of photon-tagged jet production in 1.7 nb$^{\u22121}$ of Pb+Pb data and 260 pb$^{\u22121}$ of pp data, both at $\\sqrt{{s}_{\\mathrm{NN}}}=5.02$ TeV, with the ATLAS detector. The process pp \u2192\u03b3+jet+X and its analogue in Pb+Pb collisions is measured in events containing an isolated photon with transverse momentum (${p}_{T}$) above 50 GeV and reported as a function of jet ${p}_{T}$. This selection results in a sample of jets with a steeply falling ${p}_{T}$ distribution that are mostly initiated by the showering of quarks. The pp and Pb+Pb measurements are used to report the nuclear modification factor, ${R}_{\\mathrm{AA}}$, and the fractional energy loss, ${S}_{\\mathrm{loss}}$, for photon-tagged jets. In addition, the results are compared with the analogous ones for inclusive jets, which have a significantly smaller quark-initiated fraction. The ${R}_{\\mathrm{AA}}$ and ${S}_{\\mathrm{loss}}$ values are found to be significantly different between those for photon-tagged jets and inclusive jets, demonstrating that energy loss in the QGP is sensitive to the colour-charge of the initiating parton. The results are also compared with a variety of theoretical models of colour-charge-dependent energy loss.</p>", 
  "headline": "Comparison of inclusive and photon-tagged jet suppression in 5.02 TeV Pb+Pb collisions with ATLAS", 
  "identifier": 264432, 
  "image": "https://aperta.ulakbim.gov.tr/static/img/logo/aperta_logo_with_icon.svg", 
  "license": "http://www.opendefinition.org/licenses/cc-by", 
  "name": "Comparison of inclusive and photon-tagged jet suppression in 5.02 TeV Pb+Pb collisions with ATLAS", 
  "url": "https://aperta.ulakbim.gov.tr/record/264432"
}