TY  - CONF
A1  - Lang, Thomas
A1  - Hees, Hendrik van
A1  - Steinheimer-Froschauer, Jan
A1  - Bleicher, Marcus
T1  - Correlated D-meson decays competing against thermal QGP dilepton radiation
T2  - Proceedings of Science
N2  - 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.
Y1  - 2013
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/36534
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-365342
UR  - http://pos.sissa.it/archive/conferences/185/052/CPOD%202013_051.pdf
SN  - 1824-8039
N1  - (c) Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.
N1  - 8th International Workshop on Critical Point and Onset of Deconfinement, March 11 to 15, 2013 Napa, California, USA
VL  - 2013
IS  - PoS(CPOD 2013)051
SP  - 1
EP  - 4
PB  - SISSA
CY  - Trieste
ER  -