May 20th
when: Wednesday 20/05/2020, 11:00
where: Zoom Meeting online
speaker: Katarina Krizkova Gajdosova (Czech Technical University in Prague)
title: Hot and dense QCD medium in high-energy hadron collisions
abstract:
Collisions of heavy ions at high energies are used as a tool to create a phase of QCD matter called quark-gluon plasma (QGP), where quarks and gluons are no longer bound inside hadrons. Several experimetal probes were developed to prove the properties of this medium. Their comparisons to theoretical models, and to results from colissions of proton-proton (small systems), where no such medium is expected to be created, significantly improved our knowledge about the QGP. However, measurements in small collision systems with high number of produced particles revealed features, which in heavy-ion collisions were believed to originate from the QGP. In this talk, I will try to explain why this is surprising, and how the recent measurements can help the understanding of these observations. I will mostly focus on the experimental prove called anisotropic flow, and its emasurements done at the LHC.