  Polarized neutrons are used to determine the antisymmetric part of the
magnetic susceptibility in non-centrosymmetric MnSi. The paramagnetic
fluctuations are found to be incommensurate with the chemical lattice and to
have a chiral character.
  We argue that antisymmetric interactions must be taken into account to
properly describe the critical dynamics in MnSi above T$_C$. The possibility of
directly measuring the polarization dependent part of the dynamical
susceptibility in a large class of compounds through polarised inelastic
neutron-scattering is outlined as it can yield direct evidence for
antisymmetric interactions like spin-orbit coupling in metals as well as in
insulators.
