English

Valence Quarks Polarization from COMPASS

High Energy Physics - Experiment 2007-05-23 v1

Abstract

A first evaluation of the polarized valence quark distribution Δuv(x)+Δdv(x)\Delta u_v(x)+\Delta d_v(x) from the COMPASS experiment (CERN/SPS) is presented. The data were collected by COMPASS in the years 2002--2004 using a 160 GeV polarized muon beam scattered off a large polarized 6^6LiD target and cover the range 1<Q2<1001< Q^2 < 100 GeV2^2 and 0.006<x<0.70.006<x<0.7. The analysis is based on the difference asymmetry, Ah+hA^{h^+ - h^-}, for hadrons of opposite charges, which gives a direct access to the polarization of valence quarks.

Keywords

Cite

@article{arxiv.0704.3600,
  title  = {Valence Quarks Polarization from COMPASS},
  author = {A. Korzenev},
  journal= {arXiv preprint arXiv:0704.3600},
  year   = {2007}
}
R2 v1 2026-06-21T08:22:45.454Z