Hyperon polarization in semi-inclusive deeply inelastic lepton-nucleon scattering at high energy

Abstract

We calculate the polarizations for different octet hyperons produced in the current fragmentation regions of the deeply inelastic lepton-nucleon scatterings ${\mu }^{-}N\to {\mu }^{-}HX$ and ${\nu }_{\mu }N\to {\mu }^{-}HX$ at high energy using different models for spin transfer in fragmentation processes. The results show that measurements of those hyperon polarizations should provide useful information to distinguish between different models in particular the SU(6) and the DIS pictures used frequently in the literature. We found, in particular, that measuring the polarization of ${\Sigma }^{+}$ produced in these processes can give a better test to the validity of the different spin transfer models.

Comments: 30 pages, 13 figures