Summary
We discuss the reaction polarized lepton + unpolarized nucleon\( \to _{\Sigma + }^\Lambda + \) anything and give some quantitative estimates on the polarization of the hyperons to be expected in a naive parton model. We find large polarizations for hyperons produced in the parton fragmentation region — of the order 30% for Λ and 60% for Σ+. For hyperons from the target fragmentation almost as large polarizations are predicted and a relatively large yield is expected.
Riassunto
Si discute la reazione leptone polarizzato + nucleone non polarizzato\( \to _{\Sigma + }^\Lambda + \) qualsiasi cosa, e si danno delle stime quantitative sulla polarizzazione degli iperoni che ci si deve aspettare in un semplice modello partonico. Si trovano grandi polarizzazioni per gli iperoni prodotti nella regione di frammentazione dei partoni — dell’ordine del 30% per Λ e del 60% per Σ+. Per gli iperoni che derivano dalla frammentazione del bersaglio si predicono polarizzazioni quasi altrettanto grandi e ci si aspetta una resa relativamente grande.
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References
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Bigi, I.I.Y. Some quantitative estimates about final-state polarization in deep inelastic lepton-nucleon scattering. Nuov Cim A 41, 581–591 (1977). https://doi.org/10.1007/BF02730200
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DOI: https://doi.org/10.1007/BF02730200