Dresden 2013 – wissenschaftliches Programm

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SYDI: Dissertationspreis-Symposium

SYDI 1: Dissertationspreis-Symposium

SYDI 1.1: Hauptvortrag

Montag, 4. März 2013, 14:15–14:45, HSZ-01

Heavy quarkonium in the quark-gluon plasma: the Effective Field Theory approach — •Jacopo Ghiglieri — McGill University, Montreal, Canada

A deconfined phase of Quantum Chromodynamics (QCD), the quark-gluon plasma, is actively investigated in heavy-ion collision experiments. One of the most studied probes of this short-lived medium is the dissociation of heavy quark-antiquark bound states, i.e. quarkonia. Collisions with free quarks and gluons and the screening these particles induce are indeed thought to cause dissociation of quarkonia. Experiments show a suppressed yield in the dilepton channel.

In this talk I will show how the well-established and successful zero temperature framework of Non-Relativistic (NR) Effective Field Theories (EFTs) (NRQCD, pNRQCD) for the study of heavy quarkonia (production, spectroscopy, decays, ...) can be extended to finite temperatures, so that the potential that governs the evolution of the bound state and thermal corrections to spectra and widths can be derived systematically and rigorously from QCD.