Proton-nucleus Collisions in the Color Glass Condensate Framework

We discuss proton-nucleus collisions in the framework of the color glass condensate. By assuming that the proton can be described as a low density color source, we solve exactly the Yang-Mills equations corresponding to this type of collision, and then use this solution in order to calculate inclusive gluon production or quarkantiquark production. Our result shows that k⊥-factorization, while valid for gluon production, is violated for quark pair production in proton-nucleus collisions.