First measurement of large area jet transverse momentum spectra in heavy-ion collisions

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dc.citation.articleNumber284en_US
dc.citation.issueNumber5en_US
dc.citation.journalTitleJournal of High Energy Physicsen_US
dc.citation.volumeNumber2021en_US
dc.contributor.authorThe CMS collaborationen_US
dc.date.accessioned2021-06-25T13:34:53Zen_US
dc.date.available2021-06-25T13:34:53Zen_US
dc.date.issued2021en_US
dc.description.abstractJet production in lead-lead (PbPb) and proton-proton (pp) collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV is studied with the CMS detector at the LHC, using PbPb and pp data samples corresponding to integrated luminosities of 404 μb−1 and 27.4 pb−1, respectively. Jets with different areas are reconstructed using the anti-kT algorithm by varying the distance parameter R. The measurements are performed using jets with transverse momenta (pT) greater than 200 GeV and in a pseudorapidity range of |η| < 2. To reveal the medium modification of the jet spectra in PbPb collisions, the properly normalized ratio of spectra from PbPb and pp data is used to extract jet nuclear modification factors as functions of the PbPb collision centrality, pT and, for the first time, as a function of R up to 1.0. For the most central collisions, a strong suppression is observed for high-pT jets reconstructed with all distance parameters, implying that a significant amount of jet energy is scattered to large angles. The dependence of jet suppression on R is expected to be sensitive to both the jet energy loss mechanism and the medium response, and so the data are compared to several modern event generators and analytic calculations. The models considered do not fully reproduce the data.en_US
dc.identifier.citationThe CMS collaboration. "First measurement of large area jet transverse momentum spectra in heavy-ion collisions." <i>Journal of High Energy Physics,</i> 2021, no. 5 (2021) Springer Nature: https://doi.org/10.1007/JHEP05(2021)284.en_US
dc.identifier.digitalFirstMeasurementOfLargeAreaJeten_US
dc.identifier.doihttps://doi.org/10.1007/JHEP05(2021)284en_US
dc.identifier.urihttps://hdl.handle.net/1911/110834en_US
dc.language.isoengen_US
dc.publisherSpringer Natureen_US
dc.rightsThis article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.titleFirst measurement of large area jet transverse momentum spectra in heavy-ion collisionsen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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