Delta D over D

"At large x the perturbative QCD analysis predicts “helicity retention” – i.e., the helicity of a valence quark with x ∼ 1 will matches that of the parent nucleon." Helicity Retention https://arxiv.org/abs/hep-ph/9401328 Nucl.Phys.B441:197-214,1995

Hall_B#Physics

SIDIS_PionAsym_EG2000

Extracting_DeltaDoverD_from_PionAsym

TF_InclusiveDeltaDoverD

References

[math]\displaystyle{ \frac{\Delta d}{d} }[/math] from SIDIS

1. HERMES 2005 result with tables of A1 inclusive and SIDIS [math]\displaystyle{ (\Delta d/d) }[/math] File:PRD712005p012003.pdf

[math]\displaystyle{ \frac{\Delta d}{d} }[/math] using Inclusive

1. Hall A 2004 results for A1n and [math]\displaystyle{ (\Delta d/d) }[/math] usinb Inclusive Scattering File:PRLett92 2004 pg012004.pdf
2. Hall B 2007 results using Inclusive scattering Phys. Lett. B 641 (2006) 11 File:PLB vol641 2006 pg11.pdf [math]\displaystyle{ \left (\frac{\Delta d}{d} \approx \frac{8g_1^d/(1-1.5 \omega_D) - 5g_1^p}{8F_1^d-5F_1^p}\right ) }[/math]

SIDIS Cross-sections

File:Asauryan nucle-ex1103.1649.pdf

SIDIS_CLASNOTE_2013

Hall_B#Physics