Longitudinal Lambda polarization in polarized semi-inclusive DIS

M. Anselmino (1) , M. Boglione (2) , U. D'Alesio (3) , F. Murgia (3)((1) University , INFN , Torino , Italy , (2) University of Durham

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United Kingdom (3) University Cagliari Italy)

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classification ✦ hep-ph

keywords polarizedlambdalongitudinalpolarizationsemi-inclusiveavailablebaryonscalculate

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We calculate, within pQCD parton model at leading orders, the expression of the longitudinal polarization of Lambda baryons produced in polarized semi-inclusive DIS, including weak interaction effects. We present some numerical estimates in few cases for which data are or will soon be available and discuss how to gather new information on polarized fragmentation functions.

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Longitudinal Lambda polarization in polarized semi-inclusive DIS

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