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We consider Lambda-hyperon production in the target-fragmentation region ofsemi-inclusive deep-inelastic scattering within the framework of fracturefunctions. We present a first attempt to determine the flavour and energydependences of these non-perturbative distributions through a simultaneousQCD-based fit to available neutral- and charged-current semi-inclusive-DIScross sections. Predictions based on the resulting nucleon-to-Lambda fracturefunctions are in good agreement with data and observables not included in theregression. The successful prediction of the $Q^2$ dependence of the Lambdamultiplicity notably represents the first validation of the perturbativeframework implied by fracture functions.

QCD analysis of Lambda hyperon production in DIS target-fragmentation region