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HK: Fachverband Physik der Hadronen und Kerne
HK 39: Physik mit schweren Ionen
HK 39.5: Vortrag
Donnerstag, 13. März 2008, 18:00–18:15, 2E
Jet propagation and QGP collective phenomena — •Björn Schenke1, Adrian Dumitru1, Yasushi Nara2, and Michael Strickland1 — 1Institut für Theoretische Physik, Johann Wolfgang Goethe - Universität, Max-von-Laue-Straße 1, D-60438 Frankfurt am Main — 2Akita International University, 193-2 Okutsubakidai, Yuwa-Tsubakigawa, Akita-City, Akita 010-1211, Japan
We study jet propagation in the quark-gluon-plasma using numerical simulations of the QCD Boltzmann-Vlasov equation including both hard elastic particle collisions and soft interactions mediated by classical Yang-Mills fields. We investigate jet-plasma interaction and particularly the deposition of energy in the plasma. Furthermore we consider a strongly anisotropic oblate momentum distribution in the local rest frame, caused by the expansion of the quark-gluon plasma in a heavy ion collision. In such a system the fields develop unstable modes, forming configurations of large-amplitude turbulent chromo-fields by which the jets are deflected preferentially in the longitudinal direction. This provides a possible explanation for the experimental observation that high-energy jets traversing the plasma perpendicular to the beam axis experience much stronger broadening in rapidity than in azimuth.