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| CMS-PAS-HIN-24-008 | ||
| Jet shapes based on two-particle angular correlations in PbPb collisions at $ \sqrt{\smash[b]{s_{_{\mathrm{NN}}}}} = $ 5.02 TeV | ||
| CMS Collaboration | ||
| 8 October 2024 | ||
| Abstract: In ultrarelativistic heavy ion collisions, long- and short-range correlations can be studied by forming two-dimensional histograms of the separations in pseudorapidity and azimuth of each particle in an event with every other particle in that event, with the two particles forming a pair selected in specified transverse-momentum ranges. Averaged over many events, jets result in a well defined peak structure centered at zero separation in pseudorapidity and azimuth. This note explores the evolution of the two-particle jet peak shape with the pair transverse momentum ranges, the collision centrality, and the pseudorapidity of the jet peak. Lead-lead collision results at a center-of-mass energy per nucleon pair of 5.02 TeV are presented. The data were obtained using the CMS detector and correspond to an integrated luminosity of 0.607 nb$^{-1}$. Proton-proton collision data at the same nucleon-nucleon collision energy and corresponding to 252 nb$^{-1}$ are also presented to provide a vacuum reference. The results are discussed in terms of the boost invariance of the two-particle correlation jet peak shape. | ||
| Links: CDS record (PDF) ; CADI line (restricted) ; | ||
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Compact Muon Solenoid LHC, CERN |
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