Saturation corrections to dilute-dense particle production and azimuthal correlations in the Color Glass Condensate
S. Schlichting (Fakultät für Physik, Universität Bielefeld, Bielefeld, Germany); V. Skokov (Department of Physics, North Carolina State University, Raleigh, United States of America, RIKEN-BNL Research Center, Brookhaven National Laboratory, Upton, United States of America)
We perform a numerical study of higher order saturation corrections to the dilute-dense approximation for multi-particle production in high-energy hadronic collisions in the framework of the Color Glass Condensate. We compare semi-analytical results obtained by performing a leading order expansion in the dilute field of the projectile with numerical simulations of the full Classical Yang-Mills dynamics for a number of phenomenologically relevant observables. By varying the saturation momentum of the target and the projectile, we establish the regime of validity of the dilute-dense approximation and assess the magnitude and basic features of higher order saturation corrections. In particular, we find that dilute-dense approximation faithfully reproduces dense-dense results if restricted to the range of its validity.