DeltaDoverD References

Data

File:DeltaDoverD CLAS12.eps

Caption: The dashed line represents a pQCD prediction while the solid line represents the prediction from a hyperfine perturbed constituent quark model. The solid triangles are measurements from X. Zheng et al., Phys. Rev. Lett. 92 (2004) 012004 and the diamond are from Phys.Rev.D71:012003,2005. The squares represent a prediction of the precision obtained by a SIDIS measurement performed using and energy upgrade CEBAF and the upgraded CLAS. The risers represent systematic uncertainty and the error bar lines are statistical uncertainties.

[math]\Delta d / d[/math]

File:Hep ex.0407032.pdf Quark helicity distributions in the nucleon for up, down, and strange quarks from semi-inclusive deep-inelastic scattering. By HERMES Collaboration (A. Airapetian et al.). DESY-04-107, Jul 2004. Published in Phys.Rev.D71:012003,2005. http://arXiv.org/pdf/hep-ex/0407032

Table XIV

File:Hep ex9906035.pdf Flavor Decomposition of the Polarized Quark Distributions in the Nucleon from Inclusive and Semi-inclusive Deep-inelastic Scattering, hep-ex/9906035 Hermes Data 1999

Table VII

Xbj	Delta d/d	Stat Err	Sys Error
0.033	-0.1236	0.159	0.039
0.048	0.0588	0.1452	0.0543
0.065	-0.1336	0.1307	0.0362
0.087	-0.2572	0.1303	0.0495
0.0118	-0.4876	0.1185	0.0841
0.0166	-0.0918	0.1337	0.0675
0.239	-0.5218	0.1646	0.0822
0.339	-0.2799	0.1988	0.1694
0.447	-0.8133	0.4074	0.2454

File:Nucl ex0308011.pdf "Precision Measurement of the Neutron Spin Asymmetry A1n and Spin Flavor Decomposition in the Valence Quark Region." X. Zheng et al., Phys. Rev. Lett. 92 (2004) 012004.

Xbj	Delta d/d	Stat Err	Sys Error
0.033	-0.274	0.032	0.013	0.01
0.047	-0.291	0.057	0.018	0.032
0.6	-0.324	0.083	0.031	0.089

In a previous version of the above work the values were

Xbj	Delta d/d	Stat Err	Sys Error
0.033	-0.351	0.035	0.034
0.047	-0.939	0.063	0.053
0.6	-0.44	0.092	0.142

Asymmetries

File:Hep ex 0707.4077.pdf The Polarised Valence Quark Distribution from semi-inclusive DIS. By COMPASS Collaboration (M. Alekseev et al.). CERN-PH-EP-2007-024, Jul 2007. 10pp. Published in Phys.Lett.B660:458-465,2008.

Fragmentation

File:0709.2457.pdf Fragmentation FunctionGlobal analysis using e+e- data

File:Hep ph 0108055.pdf Fragmentation functions from semiinclusive DIS pion production and implications for the polarized parton densities. Stefan Kretzer, (Michigan State U.) , Elliott Leader, (Imperial Coll., London) , Ekaterina Christova, (Sofiya, Inst. Nucl. Res.) . MSU-HEP-10702, Aug 2001. 19pp. Published in Eur.Phys.J.C22:269-276,2001.

Hadronization in polarized semi-inclusive DIS: The Question of independent fragmentation.

Aram Kotzinian, (Turin U. & INFN, Turin & Yerevan Phys. Inst. & Dubna, JINR) . Oct 2004. 10pp. Published in Eur.Phys.J.C44:211,2005. e-Print: hep-ph/0410093

NLO analysis

File:Hep-ph 0603236.pdf A.M. Sissakian AIX archive hep-ph/0603236

Inclusive method

File:0810.4718.pdf CLAS 12 Science Program, V. Burkert, 2008

Delta_D_over_D