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@MISC{Collaboration:348456,
      author       = {{ALICE Collaboration}},
      title        = {{O}bservation of flow angle and flow magnitude fluctuations
                      in {P}b-{P}b collisions at $\sqrt{s_{\rm {NN}}}$ = 5.02
                      {T}e{V} at the {LHC}},
      reportid     = {GSI-2024-00292},
      year         = {2023},
      note         = {Journal Article GSI record: GSI-2024-00291},
      abstract     = {This Letter reports on the first measurements of transverse
                      momentum dependent flow angle $\Psi_{n}$ and flow magnitude
                      $v_{n}$ fluctuations, determined using new four-particle
                      correlators. The measurements are performed for various
                      centralities in Pb-–Pb collisions at a centre of mass
                      energy of $\sqrt{s_{\rm NN}} = 5.02{\rm\ TeV}$ with ALICE at
                      the LHC. Both flow angle and flow magnitude fluctuations are
                      observed in the presented centrality ranges and are
                      strongest in the most central collisions and for a
                      transverse momentum $p_{\rm T} > 2{\rm\ GeV}/c$. Comparison
                      with theoretical models, including iEBE-VISHNU, MUSIC, and
                      AMPT, show that the measurements bring novel insights into
                      the fluctuating initial conditions that are not well known.
                      In addition, these new results exhibit unique sensitivities
                      to the specific shear viscosity, $\eta/s$, of the
                      quark–gluon plasma (QGP) and to the initial state of the
                      heavy-ion collisions. As such fluctuations are getting
                      stronger with increasing $p_{\rm T}$, a re-examination of
                      existing models is needed to have a more precise and
                      unbiased extraction of properties of the QGP.},
      cin          = {ALI / DTL / CIT / EXM / ALICE@CERN},
      cid          = {I:(DE-Ds200)ALI-20080822OR105 /
                      I:(DE-Ds200)DTL-20051214OR031 /
                      I:(DE-Ds200)CIT-20110310OR121 /
                      I:(DE-Ds200)EXM-20080818OR100 / I:(DE-Ds200)Coll-CERN-ALICE},
      pnm          = {612 - Cosmic Matter in the Laboratory (POF4-612) / HGS-HIRe
                      - HGS-HIRe for FAIR (HGS-HIRe) / SUC-GSI-Heidelberg -
                      Strategic university cooperation GSI-U Heidelberg
                      (SUC-GSI-HE) / SUC-GSI-Frankfurt - Strategic university
                      cooperation GSI-U Frankfurt/M (SUC-GSI-FR) /
                      SUC-GSI-Darmstadt - Strategic university cooperation GSI-TU
                      Darmstadt (SUC-GSI-DA)},
      pid          = {G:(DE-HGF)POF4-612 / G:(DE-Ds200)HGS-HIRe /
                      G:(DE-Ds200)SUC-GSI-HE / G:(DE-Ds200)SUC-GSI-FR /
                      G:(DE-Ds200)SUC-GSI-DA},
      experiment   = {EXP:(DE-H253)LHC-Exp-ALICE-20150101},
      typ          = {PUB:(DE-HGF)32},
      doi          = {10.17182/HEPDATA.139721},
      url          = {https://repository.gsi.de/record/348456},
}