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SUMMARY:Light-Ion Collisions at the LHC
DTSTART:20261112T151500Z
DTEND:20261112T164500Z
DTSTAMP:20261113T054500Z
UID:indico-event-26080@indico.gsi.de
CONTACT:lorenz.smekal@uni-giessen.de
DESCRIPTION:Speakers: Aleksas Mazeliauskas (U Heidelberg)\n\nThe Large Had
 ron Collider is not only a machine for discovering new particles. It is al
 so a laboratory for creating and studying a new phase of QCD matter. When 
 lead nuclei collide at ultrarelativistic energies\, the resulting energy d
 ensities far exceed the QCD confinement scale and melt hadrons into a Quar
 k-Gluon Plasma (QGP)\, a strongly coupled\, nearly perfect fluid that is w
 ell described by relativistic viscous hydrodynamics. Yet a fundamental que
 stion remains. How does a handful of elementary particles thermalize and f
 orm a collective medium in such a vanishingly short window of time?\nLight
 -ion collisions probe the critical regime where nuclear structure\, pertur
 bative QCD\, and quark–gluon plasma physics intersect. The first oxygen
 –oxygen and neon–neon runs at the LHC in July 2025 opened a new chapte
 r in the LHC ion program\, bridging the gap between proton–proton and he
 avy-ion collisions in a controlled and theoretically tractable way. For a 
 decade\, experiments had found QGP-like collective flow even in proton–p
 roton collisions\, while jet quenching\, the canonical signature of the QG
 P\, remained elusive in small systems. The 2025 runs have changed this pic
 ture. First results show evidence of jet quenching in systems with as few 
 as ten participating nucleons\, and collective flow measurements in oxygen
 –oxygen and neon–neon collisions agree well with hydrodynamic predicti
 ons with input from ab initio nuclear structure calculations.\nThis talk w
 ill discuss what these results reveal about thermalization\, collectivity\
 , and the boundaries of the QGP phase\, and what might come next for the i
 on program at the LHC. \n\nhttps://indico.gsi.de/event/26080/
LOCATION:511 (Physics Building)
URL:https://indico.gsi.de/event/26080/
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