Is the riddle of the hyperon polarizations solved?

Abstract

We review in this talk some aspects of the exciting field of hyperon polarization phenomena in high energy reactions, over the last twenty years or so. On the experimental side, a large amount of significant polarization data for hyperon and antihyperon inclusive production, has been accumulated in a rather broad energy range. Many theoretical attempts to explain that have been proposed and we will discuss some of them, showing their strong limitations in most cases.