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Article
Report number arXiv:2308.16128 ; CERN-EP-2023-188
Title Measurements of jet quenching using semi-inclusive hadron+jet distributions in pp and central PbPb collisions at sNN=5.02 TeV
Author(s) ALICE Collaboration  Prikaži svih 1062 autora
Corporate author(s) The ALICE collaboration
Publication 2024-07-09
Imprint 28 Aug 2023
Number of pages 36
Note 56 pages, 22 captioned figures, 4 tables, authors from page 50, published version, figures at http://alice-publications.web.cern.ch/node/9599
Published in: Phys. Rev. C 110 (2024) 014906
DOI 10.1103/PhysRevC.110.014906
Subject category Nuclear Physics - Experiment ; Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; ALICE
Keywords QCD ; relativistic heavy ion physics ; quark gluon plasma ; jet physics ; experimental results
Abstract The ALICE Collaboration reports measurements of the semi-inclusive distribution of charged-particle jets recoiling from a high transverse momentum (high pT) charged hadron, in pp and central PbPb collisions at center of mass energy per nucleonnucleon collision sNN=5.02 TeV. The large uncorrelated background in central PbPb collisions is corrected using a data-driven statistical approach, which enables precise measurement of recoil jet distributions over a broad range in pT,chjet and jet resolution parameter R. Recoil jet yields are reported for R=0.2, 0.4, and 0.5 in the range 7<pT,chjet<140 GeV/c and π/2<Δφ<π, where Δφ is the azimuthal angular separation between hadron trigger and recoil jet. The low pT,chjet reach of the measurement explores unique phase space for studying jet quenching, the interaction of jets with the quark-gluonnplasma generated in high-energy nuclear collisions. Comparison of pT,chjet distributions from pp and central PbPb collisions probes medium-induced jet energy loss and intra-jet broadening, while comparison of their acoplanarity distributions explores in-medium jet scattering and medium response. The measurements are compared to theoretical calculations incorporating jet quenching.
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Copyright/License Publication: © 2024-2025 CERN (License: CC BY 4.0)
Preprint: © 2023-2025 CERN (License: CC-BY-4.0)
Submitted by javier.castillo.castellanos@cern.ch



 


 Zapis kreiran 2023-08-28, zadnja izmjena 2025-01-14


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