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@ARTICLE{Aad:634772,
      author       = {Aad, Georges and others},
      collaboration = {{ATLAS Collaboration}},
      title        = {{M}easurement of substructure-dependent suppression of
                      large-radius jets with charged particles in {P}b+{P}b
                      collisions with {ATLAS}},
      reportid     = {PUBDB-2025-02596, arXiv:2504.04805. CERN-EP-2025-078},
      year         = {2025},
      note         = {34 pages in total, author list starting page 17, 4 figures,
                      0 tables, submitted to Phys. Lett. B. All figures including
                      auxiliary figures are available at
                      https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HION-2020-06},
      abstract     = {Measurements of jet substructure in Pb+Pb collisions
                      provide key insights into the mechanism of jet quenching in
                      the hot and dense QCD medium created in these collisions.
                      This Letter presents a measurement of the suppression of
                      large-radius jets with a radius parameter of $R = 1.0$ and
                      its dependence on the jet substructure. The measurement uses
                      1.72 nb$^{-1}$ of Pb+Pb data and 255 pb$^{-1}$ of $pp$ data,
                      both at $\sqrt{s_{_\mathrm{NN}}} = 5.02$ TeV, recorded with
                      the ATLAS detector at the Large Hadron Collider.
                      Large-radius jets are reconstructed by reclustering $R =
                      0.2$ calorimetric jets and are measured for transverse
                      momentum above $200$ GeV. Jet substructure is evaluated
                      using charged-particle tracks, and the overall level of jet
                      suppression is quantified using the jet nuclear modification
                      factor ($R_\mathrm{AA}$). The jet $R_\mathrm{AA}$ is
                      measured as a function of jet $p_{\mathrm{T}}$, the charged
                      $k_t$ splitting scale ($\sqrt{d_{12}}$), and the angular
                      separation ($dR_{12}$) of two leading sub-jets. The jet
                      $R_\mathrm{AA}$ gradually decreases with increasing
                      $\sqrt{d_{12}}$, implying significantly stronger suppression
                      of large-radius jets with larger $k_t$ splitting scale. The
                      jet $R_\mathrm{AA}$ gradually decreases for $dR_{12}$ in the
                      range $0.01{-}0.2$ and then remains consistent with a
                      constant for $dR_{12} \gtrsim 0.2$. The observed significant
                      dependence of jet suppression on the jet substructure will
                      provide new insights into its role in the quenching
                      process.},
      cin          = {ATLAS},
      cid          = {I:(DE-H253)ATLAS-20120731},
      pnm          = {611 - Fundamental Particles and Forces (POF4-611) / DFG
                      project G:(GEPRIS)469666862 - Präzisionstests des
                      Standardmodells unter der Verwendung von geboosteten
                      W/Z-Bosonen am Large Hadron Collider (469666862) / REALDARK
                      - REAL-time discovery strategies for DARK matter and dark
                      sector signals at the ATLAS detector with Run-3 LHC data
                      (101002463) / DITTO - Comprehensive search for new phenomena
                      in the dilepton spectrum at the LHC (101089007) / BARD -
                      B-resonance Algorithm using Rare Decays (101116429)},
      pid          = {G:(DE-HGF)POF4-611 / G:(GEPRIS)469666862 /
                      G:(EU-Grant)101002463 / G:(EU-Grant)101089007 /
                      G:(EU-Grant)101116429},
      experiment   = {EXP:(DE-H253)LHC-Exp-ATLAS-20150101},
      typ          = {PUB:(DE-HGF)25},
      eprint       = {2504.04805},
      howpublished = {arXiv:2504.04805},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:2504.04805;\%\%$},
      doi          = {10.3204/PUBDB-2025-02596},
      url          = {https://bib-pubdb1.desy.de/record/634772},
}