Speaker
Description
Studying high-energy hadronic scattering processes to understand the structure
of nuclei has been the focus of experimental and theoretical studies for more
than three decades now. The Color Glass Condensate(CGC) effective theory has
been developed and used to study high-energy proton-nucleus (pA) collisions in
particular. One of the main approximations adopted in the CGC is the so-called
eikonal approximation, which amounts to neglecting power-suppressed corrections
in the high-energy limit. This approximation is well justified for asymptotically
high energies, however, corrections to it might be sizable in practice, in
particular at relativistic heavy ion collider (RHIC) and upcoming electron ion
collider (EIC).
In this talk, I will briefly review the eikonal approximation and present the computation
of a gluon propagator through the target at next-to-eikonal accuracy.
Furthermore, I will present its application to gluon production in pA collisions.
