Scaling Patterns for QCD Jets
  Jet emission at hadron colliders follows simple scaling patterns. Based on perturbative QCD we derive Poisson and staircase scaling for final state as well as initial state radiation. Parton density effects enhance staircase scaling at low multiplicities. We propose experimental tests of our theoretical findings in Z+jets and QCD gap jets production based on minor additions to current LHC analyses. 
Erik Gerwick, Tilman Plehn, Steffen Schumann, Peter Schichtel
hep-ph hep-ex