Universal threshold for single-spin asymmetries in fixed target experiments

Abstract

The analysis of inclusive $\pi$-meson single spin asymmetry measurements was done. It was found that the single spin asymmetry starts to grow up at the same value of the $\pi$-meson energy in the center of mass system for fixed target experiments at the beam energy range from 13 to 200 GeV.

9 pages, 8 figures, submitted to Sov. Journ of Nucl Phys