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Lyrik: Intermedial
(2003)
Der eine Lyriker ist enttäuscht vom Film; sein „Kinematograph“ zeigt ihm nur „ein lautlos tobendes Familiendrama“ mit Eifersucht und dann eine „Älplerin auf mächtig steilem Wege“: Und in den dunklen Raum – mir ins Gesicht – Flirrt das hinein, entsetzlich! Nach der Reihe! Die Bogenlampe zischt zum Schluss nach Licht – Wir schieben geil und gähnend uns ins Freie. Der andere Lyriker ist begeistert vom Film; sein „Kinodirektor“ macht alle Menschen für einen Groschen glücklich, indem er ihnen „das einzige Paradies der Welt“ öffnet: Ich schenke euch die Schöpfung Gottes: das Paradies, ohne Schlange und Apfel. Fluch dem Skeptischen, der lächelnd an die Leinwand klopft Und sagt: Das ist ein weißes Tuch! Fluch diesem Lügner; denn das ist das Leben, das reellste Leben.
The QGP that might be created in ultrarelativistic heavy-ion collisions is expected to radiate thermal dilepton radiation. However, this thermal dilepton radiation interferes with dileptons originating from hadron decays. In the invariant mass region between the f and J=y peak (1GeV <= M l+l <=. 3GeV) the most substantial background of hadron decays originates from correlated DD¯ -meson decays. We evaluate this background using a Langevin simulation for charm quarks. As background medium we utilize the well-tested UrQMD-hybrid model. The required drag and diffusion coefficients are taken from a resonance approach. The decoupling of the charm quarks from the hot medium is performed at a temperature of 130MeV and as hadronization mechanism a coalescence approach is chosen. This model for charm quark interactions with the medium has already been successfully applied to the study of the medium modification and the elliptic flow at FAIR, RHIC and LHC energies. In this proceeding we present our results for the dilepton radiation from correlated D¯D decays at RHIC energy in comparison to PHENIX measurements in the invariant mass range between 1 and 3 GeV using different interaction scenarios. These results can be utilized to estimate the thermal QGP radiation.
Using a microscopic transport model together with a coalescence after-burner, we study the formation of deuterons in Au + Au central collisions at s = 200 AGeV . It is found that the deuteron transverse momentum distributions are strongly a ected by the nucleon space-momentum correlations, at the moment of freeze-out, which are mostly determined by the number of rescatterings. This feature is useful for studying collision dynamics at ultrarelativistic energies.
We examine experimental signatures of TeV-mass black hole formation in heavy ion collisions at the LHC. We find that the black hole production results in a complete disappearance of all very high p_T (> 500 GeV) back-to-back correlated di-jets of total mass M > M_f ~ 1 TeV. We show that the subsequent Hawking-decay produces multiple hard mono-jets and discuss their detection. We study the possibility of cold black hole remnant (BHR) formation of mass ~ M_f and the experimental distinguishability of scenarios with BHRs and those with complete black hole decay. Finally we point out that a Heckler-Kapusta-Hawking plasma may form from the emitted mono-jets. In this context we present new simulation data of Mach shocks and of the evolution of initial conditions until the freeze-out.