Scattering of Quark-Quasiparticles in the Quark-Gluon Plasma

Details Scattering of Quark-Quasiparticles in the Quark-Gluon Plasma Scattering of Quark-Quasiparticles in the Quark-Gluon Plasma

2005-09-27

arxiv.org/abs/hep-ph/0509310v1

Nucl.Phys. A774 (2006) 761-764

Physics

High Energy Physics

High Energy Physics - Phenomenology

Talk presented at Quark Matter 2005; four pages, four figures

Scientific paper

10.1016/j.nuclphysa.2006.06.016

Employing a Brueckner-type many-body approach, based on a driving potential extracted from lattice QCD, we study light quark properties in a Quark-Gluon Plasma (QGP) at moderate temperatures, $T\simeq$~1-2~$T_c$. The quark-antiquark $T$-matrix is calculated self-consistently with pertinent quark self-energies. While the repulsive octet channel induces quasiparticle masses of up to 150~MeV, the attractive color-singlet part exhibits resonance structures which lead to quasiparticle widths of $\sim$200~MeV.

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