Darmstadt 2008 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 34: Postersitzung
HK 34.72: Poster
Donnerstag, 13. März 2008, 14:00–16:00, Poster C3
QCD Sum Rules for the D-Meson at finite Density — •Thomas Hilger1, Ronny Thomas2, and Burkhard Kämpfer1,2 — 1Institut für Theoretische Physik, TU Dresden, 01062 Dresden, Germany — 2Forschungszentrum Dresden-Rossendorf, PF 510119, 01314 Dresden, Gemany
We consider the D-meson in nuclear matter at finite density and zero temperature in view of the future experiments within the CBM and PANDA projects at FAIR. Therefore QCD sum rules are applied to the heavy-light pseudoscalar current of the D-meson. This extends our investigations of light vector mesons [1] and nucleons [2]. While for these hadrons four-quark condensates play a significant role for density modifications of spectral densities, the D-meson properties also depend strongly on the chiral condensate (in QCD sum rules for light vector mesons the chiral condensate is suppressed by the light quark mass). The importance of the large charm quark mass as a new scale and amplifier of the chiral condensate and the impact of various condensates (which mix under renormalization) on the D-meson mass are discussed.