The transverse polarisation in inclusively produced Λ and Λ̄ hyperons has been studied at HERMES using the 27.5 GeV positron beam of the HERA accelerator at DESY. The average transverse polarisations were found to be
for Λ and Λ̄, respectively. The dependence of
on the transverse momentum pT and on the hyperons’ light‐cone momentum fraction ζ has been investigated. The measured polarisations for Λ and Λ̄ exhibit different behavior in the current and target fragmentation regions.