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Scattering of Quark-Quasiparticles in the Quark-Gluon Plasma

M. Mannarelli·R. Rapp
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Abstract

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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M. Mannarelli, R. Rapp. 2005-09-27. Scattering of Quark-Quasiparticles in the Quark-Gluon Plasma. https://doi.org/10.1016/j.nuclphysa.2006.06.016

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