  We consider two-gluon production in dilute-dense collisions within the Color
Glass Condensate framework, applicable to both proton-nucleus and heavy-light
ion collisions. We go beyond the glasma graph approximation which is valid in
the dilute-dilute limit and show the correspondence between the glasma graphs
and the $k_T$-factorized approach that we use in our calculation. We then
identify the classical uncorrelated, and the Hanbury-Brown-Twiss (HBT) and Bose
enhancement correlated contributions, with the Bose enhancement contribution
being suppressed by the number of degrees of freedom with respect to the
uncorrelated piece. We show that both the HBT and the Bose enhancement pieces
survive the inclusion of higher order contributions in density and that they
stem from the quadrupole piece of the two-gluon inclusive cross section.
Finally, we illustrate the results using a toy model that allows a simple
numerical implementation.
