  We discuss the scattering of high-energy magnons off a single magnetic
skyrmion within the field-polarized ground state of a two-dimensional chiral
magnet. For wavevectors larger than the inverse skyrmion radius, $k r_s \gg 1$,
the magnon scattering is dominated by an emerging magnetic field whose flux
density is essentially determined by the topological charge density of the
skyrmion texture. This leads to skew and rainbow scattering characterized by an
asymmetric and oscillating differential cross section. We demonstrate that the
transversal momentum transfer to the skyrmion is universal due to the
quantization of the total emerging flux while the longitudinal momentum
transfer is negligible in the high-energy limit. This results in a
magnon-driven skyrmion motion approximately antiparallel to the incoming magnon
current and a universal relation between current and skyrmion-velocity.
