Radiative and collisional energy loss, and photon-tagged jets at RHIC G.-Y. Qin, J. Ruppert, C. Gale, S. Jeon and G. D. Moore Eur. Phys. J. C, 61 4 (2009) 819-823 Published online: 09 January 2009 DOI: 10.1140/epjc/s10052-008-0841-x