Polarizedq→Λ fragmentation functions frome+e−→Λ + X

Measurement of the helicity asymmetric cross section for semi-inclusive production of Λ hyperons in ${\mathit{e}}^{+}$ ${\mathit{e}}^{\mathrm{-}}$ annihilation near the ${\mathit{Z}}^0$ resonance allows a complete determination of the spin-dependent fragmentation functions for the different quark flavors into the Λ. The parity-violating, self-analyzing, decay of the final state Λ makes the experimental analysis of the helicity asymmetry possible. This experiment should be practical with present day technology at the LEP collider at CERN or at the SLAC Linear Collider.