Polarized light–sea-quark flavor asymmetry in polarized semi-inclusive processes

Abstract

We propose new formulas for extracting the difference of the polarized light--sea-quark density $\ensuremath{\Delta}\overline{d}(x)\ensuremath{-}\ensuremath{\Delta}\ifmmode \bar{u}\else \={u}\fi{}(x)$ from polarized deep-inelastic semi-inclusive data. We have estimated the value of it from the present experimental data measured by the SMC and HERMES groups. Although the data suggest a violation of polarized light--sea-quark flavor symmetry, the precision of the present data is not enough for confirming it.