  The observed polarisation of Lambda hyperons from the inclusive pA -> Lambda
X reaction at high energies has previously been well described within the Lund
string model through polarised ss quark pair production in the string breaking
hadronisation process. This model is here applied to the exclusive pbar p ->
Lambdabar Lambda reaction at low energies and compared to available data sets
down to an incident beam momentum of 1.835 GeV/c. This required an extension of
the diquark scattering model to involve three components: an isotropic part
relevant close to threshold, a spectator part and a forward scattering part as
in pA -> Lambda X at high energies. The observed angular distributions are then
reproduced and, for momentum transfers above |t'| = 0.2 GeV^2, agreement with
the measured polarisation is also obtained.

High Energy Physics - Phenomenology;High Energy Physics - Experiment;Nuclear Experiment