Mainz 2012 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 38: Hadronenstruktur und -spektroskopie
HK 38.5: Vortrag
Donnerstag, 22. März 2012, 18:00–18:15, RW 1
Medium modifications of mesons with charm — •Thomas Hilger1, Burkhard Kämpfer1, Sergey Dorkin2, Leonid Kaptari2, and Stefan Leupold3 — 1Helmholtz-Zentrum Dresden-Rossendorf, PF 510119, 01314 Dresden — 2Joint Institute for Nuclear Research Joliot-Curie 6 141980, Dubna Moscow Region, Russia — 3Univ. of Uppsala Box 256 S-75121 Uppsala, Sweden
The in-medium behavior of pseudo-scalar and vector mesons is investigated with QCD sum rules. The rho meson is considered within a scenario where the chirally odd condensates are zero. The interplay of mass shift and broadening of the spectral function is highlighted and compared to NA60 data. We apply finite density QCD sum rules to mesons consisting of a heavy and a light quark (D, Ds and B) and investigate their sensitivity to the chiral condensate and consider the splitting of particle and antiparticle spectral functions with increasing density of the ambient nuclear matter [1]. In order to gain a more direct dependence on the chiral condensate and other potential order parameters of chiral symmetry we present a series of Weinberg-Shuryak type sum rules for heavy-light systems at finite densities [2].
[1] T. Hilger, R. Thomas, B. Kämpfer, Phys.Rev. C79 (2009) 025202.
[2] T. Hilger, B. Kämpfer, S. Leupold, Phys.Rev. C84 (2011) 045202.