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Probing the quark-gluon plasma with light-flavor hadrons with the ALICE detector at the LHC

Event Details

Event Dates: 

Monday, February 15, 2016 - 4:00pm

Seminar Location: 

  • Duane Physics Room G125

Speaker Name(s): 

Michele Floris

Speaker Affiliation(s): 

CERN
Seminar Type/Subject

Scientific Seminar Type: 

  • Nuclear/Particle Physics Seminar

Event Details & Abstract: 

Quantum ChromoDynamics (QCD) describes the interaction between the elementary constituents of hadronic matter, the quarks and gluons. Quarks and gluons are not observed as free particles, but are confined inside color-singlet hadrons. QCD, however, predicts the existence of a phase of matter at high temperature (T > 10^12 K) where quarks and gluons are no longer confined, called the Quark-Gluon Plasma (QGP). The QGP can be created and studied in the laboratory colliding heavy nuclei at ultra-relativistic energies. The ALICE experiment at the CERN LHC is pursuing this program at the energy frontier (\sqrt{s_NN} > 2.76 TeV). After a brief introduction on the physics of confinement and heavy-ion experiments, I will discuss recent results from the ALICE experiment on the collective properties and hadronization mechanism of the system created in the collision. Measurements of light-flavor hadrons obtained in lead-lead, proton-proton and proton-lead collisions will be compared and contrasted. These studies revealed unexpected features, which are currently not clarified and could lead to a better understanding of high-energy hadronic interactions.