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SUMMARY:Probing the Trillion-Degree Quark Soup
DTSTART:20260714T141500Z
DTEND:20260714T151500Z
DTSTAMP:20260709T052700Z
UID:indico-event-24779@indico.gsi.de
CONTACT:l.wunderlich@gsi.de\;+49-6159-71-1879
DESCRIPTION:Speakers: Yen-Jie Lee (MIT)\n\nQuantum Chromodynamics (QCD) is
  our fundamental theory of the strong interaction\, but calculating and vi
 sualizing the many-body phases of quark-gluon matter remain difficult. Col
 lisions of heavy nuclei at the Relativistic Heavy Ion Collider and the Lar
 ge Hadron Collider (LHC) create droplets of quark-gluon plasma (QGP) at te
 mperatures above a trillion degrees\, where quarks and gluons are deconfin
 ed. Measurements of collective flow and long-range correlations indicate t
 hat this plasma behaves as an almost perfect liquid with remarkably low vi
 scosity.\nTo go beyond studies of the debris of the QGP\, we can study the
  passage of color-charged particles through this fascinating medium. Heavy
 -ion collisions produce not only the QGP\, but also heavy quarks and energ
 etic quarks and gluons in rare hard-scattering processes. High-energy quar
 ks and gluons lose energy by radiating gluons or by colliding with other q
 uarks and gluons as they traverse the QGP\, a phenomenon often referred to
  as “jet quenching.” New measurements with Z0-tagged jets reveal a neg
 ative wake in the medium\, providing direct evidence that fast partons sti
 r the QGP and leave behind a hydrodynamic response. Slow-moving heavy qua
 rks\, which interact strongly with the QGP\, open a window into the in-med
 ium color force and hadronization in a high-density environment. In this t
 alk\, I will review the most striking observations from recent data collec
 ted by the Compact Muon Solenoid detector at the LHC and discuss the prope
 rties of the QGP fluid extracted from these measurements.\n \n \n \n\nh
 ttps://indico.gsi.de/event/24779/
LOCATION:Main Lecture Hall (GSI)
URL:https://indico.gsi.de/event/24779/
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