Photon-jet correlation in heavy ion collisions at the LHC
  Transverse momentum imbalance between a jet produced with a hard photon is considered as a signal of medium-induced partonic energy loss in ultrarelativistic heavy ion collisions. We analyze photon-jet correlation in the context of a real experimental situation at the LHC, the problem of neutral pion background being discussed. 
O.L. Kodolova, I.P. Lokhtin and A. Nikitenko