Particle Production with Rapidity Correlations in Proton-Nucleus   Collisions
  We illustrate how a generalization of the JIMWLK formalism which treats independently the direct and complex conjugate amplitudes can be used to describe semi-inclusive multiparticle production with rapidity correlations in pA collisions. The evolution equations that are obtained with this formalism are susceptible of numerical implementation as a Langevin process. 
E. Iancu, J.D. Madrigal and D.N. Triantafyllopoulos
hep-ph