Is the polarized light flavor sea-quark asymmetric?

Abstract

Simple formulas on $\Delta \bar{d}(x)-\Delta \bar{u}(x)$ are proposed for extracting their values from polarized deep-inelastic semi-inclusive data. The present SMC and HERMES data suggest that $\Delta \bar{d}(x)-\Delta \bar{u}(x)$ is slightly negative, though the precision of the data is not enough for confirming it.

Comments: 7pages, 1 figure; added the hep-ph number of Ref.(10)