T-matrix approach to heavy quark diffusion in the QGP H. van Hees, M. Mannarelli, V. Greco and R. Rapp Eur. Phys. J. C, 61 4 (2009) 799-806 Published online: 09 January 2009 DOI: 10.1140/epjc/s10052-008-0838-5