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SUMMARY:Hyperon ($\\Lambda$) polarization along the beam axis in Pb-Pb col
 lisions at $\\sqrt{𝑠_{\\rm{NN}}}=5.36$ TeV with ALICE
DTSTART:20261020T090000Z
DTEND:20261020T100000Z
DTSTAMP:20261106T090800Z
UID:indico-event-1742098@indico.cern.ch
CONTACT:ep-seminars.colloquia@cern.ch
DESCRIPTION:Speakers: Junlee Kim (Fudan University (CN))\n\n\nThe quark–
 gluon plasma (QGP) created in relativistic heavy-ion collisions exhibits c
 ollective behaviour resembling that of a nearly perfect fluid.\nThe anisot
 ropic expansion of this medium generates non-uniform velocity gradients an
 d local vortical structures\, which can lead to spin polarization of produ
 ced particles. The polarization of $\\Lambda$ and $\\overline{\\Lambda}$ h
 yperons along the beam axis provides a sensitive probe of these structures
  and their connection to the collective dynamics of the QGP.\nIn this semi
 nar\, new measurements of longitudinal $\\Lambda$ and $\\overline{\\Lambda
 }$ polarization in Pb–Pb collisions at $\\sqrt{s_{\\rm{NN}}} = 5.36$ TeV
  with the ALICE detector will be presented. The large Run 3 data sample en
 ables a substantially more precise measurement of the polarization relativ
 e to the second-order event plane and\, for the first time at the LHC\, a 
 measurement relative to the third-order event plane.\nThe results are comp
 ared with viscous hydrodynamic calculations\, which indicate that the sec
 ond-order polarization is sensitive to the implementation of QGP bulk vis
 cosity. The third-order measurement provides complementary information on
  fluctuation-driven vortical structures associated with the initial state
 . Together\, these measurements offer new opportunities to investigate the
  interplay between local vorticity\, spin polarization and the transport 
 properties of the QGP.\n\n \nCoffee will be served at 10h30\n \n\nhttps
 ://indico.cern.ch/event/1742098/\n\nZoom: https://cern.zoom.us/j/683146650
 39?pwd=gSJxJhwbsF7L4DC9d6fpzD3zhht6QX.1
LOCATION:500/1-001 - Main Auditorium (CERN)
URL:https://indico.cern.ch/event/1742098/
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