Hyperon Polarization in Inclusive Hadronic Production
Abstract
A QCD formula for the polarization in the large-pT hyperon production in the unpolarized nucleon-nucleon collision at large xF is derived. We focus on the mechanism in which the chiral-odd spin-independent twist-3 quark distribution EF(x,x) becomes the source of the transversely polarized quarks fragmenting into the polarized . A simple model estimate for that contribution shows the possibility that it gives rise to a sizable polarization.
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