The background for Cherenkov gluons at RHIC and LHC energies
  The pseudorapidity distribution of centers of dense isolated groups of particles in HIJING model is determined. It can be considered as the background for Cherenkov gluons. If peaks over this background were found in experiment, they would indicate the onset of new collective effects. 
I.M. Dremin, L.I. Sarycheva, K.Yu. Teplov