Description
This contribution discusses the physics of small $x$, in particular through the viewpoint of the Color Glass Condensate high energy effective theory of QCD. Small-$x$ theory is rapidly advancing in pushing perturbative calculations to higher accuracy in the weak coupling expansion. Likewise, the consistency of the description of different scattering processes is continuously being improved and new processes addressed. Theoretical advances are also driven by the need to understand upcoming high energy collider measurements, in particular at the LHC and at the EIC.
Author
Tuomas Lappi
(University of Jyvaskyla)