Determination of s(x) and \bar{s}(x) from a global QCD analysis

TL;DR

This paper presents a new global QCD analysis incorporating neutrino and antineutrino DIS data to better understand the strange quark content of the nucleon, revealing a hard strangeness at high-x and potential asymmetry.

Contribution

It introduces a novel global QCD analysis method that includes neutrino DIS data to constrain strange quark distributions in the nucleon.

Findings

Evidence for a hard strange quark distribution at high-x

Indications of an asymmetry between s(x) and ar{s}(x)

Enhanced understanding of the nucleon sea quark structure

Abstract

A new global QCD analysis of DIS data is presented. The \nu Fe and \bar{\nu}Fe differential cross-section data are included to constrain the strange component of the nucleon sea. As a result we found a hard strangeness at high-x and some evidence for an asymmetry between xs(x) and x\bar{s}(x).