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

TL;DR

This paper introduces new formulas to extract the difference in polarized light sea-quark densities from semi-inclusive deep-inelastic scattering data and estimates its value using existing experimental results.

Contribution

It provides novel formulas for analyzing polarized sea-quark asymmetry and applies them to current experimental data, highlighting the potential symmetry violation.

Findings

Estimated the polarized light sea-quark asymmetry from existing data.

Data suggests possible violation of flavor symmetry, but not conclusively.

Current data precision is insufficient for definitive conclusions.

Abstract

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