CGC formalism with two sources
arXiv:hep-ph/0607126 · doi:10.1016/j.nuclphysa.2006.10.076
Abstract
In this work we extend the JIMWLK formalism to the two-source problem. The S-matrix for the forward scattering can be written in a double functional integral representation which involves the usual functional integral for the gluon field and the spin path integral for the external color sources. Modifications needed in the light-cone gauge are discussed. Using our source term we compute the produced gluon field and discuss the duality of the high energy evolution kernel in the pA collision.
Improved derivation of light-cone gauge source terms, version to appear in Nucl. Phys. A