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It is shown that the Λ/Λ cross section ratio in semi-inclusive electroproduction of Λ and Λ hyperons in deep inelastic scattering of charged lepton on a nucleon target, can provide useful information on the quark to Λ fragmentation functions. This ratio is calculated explicitly in a quark-diquark model, a pQCD based analysis, and an SU(3) symmetry model, with three different options for the contribution...
Based on a simple quark-diquark model, we propose a set of unpolarized, longitudinally polarized and transversely polarized fragmentation functions for the Λ by fitting the unpolarized Λ production data in e + e - annihilation. It is found that the helicity structure of the obtained Λ fragmentation functions is supported by the all available experimental data on the longitudinal Λ...
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