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2008

Global Analysis of Helicity Parton Densities and Their Uncertainties

de Florian, Daniel, Sassot, Rodolfo, Stratmann, Marco et al.

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We present a new analysis of the helicity parton distributions of the nucleon.

The analysis takes into account the available data from inclusive and semi-inclusive polarized deep inelastic scattering, as well as from polarized pp scattering at RHIC.
For the first time, all theoretical calculations are performed fully at next-to-leading order (NLO) of perturbative QCD, using a method that allows to incorporate the NLO corrections in a very fast and efficient way in the analysis.
We find evidence for a rather small gluon polarization in the nucleon, over a limited region of momentum fraction, and for interesting flavor patterns in the polarized sea.

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Built on

M. Glück et al
2001
Earlier work this paper cites.
M. Stratmann and W. Vogelsang, Phys. Rev. D64
2001
Earlier work this paper cites.
D. Stump et al
2002
Earlier work this paper cites.
J. Pumplin et al
2002
Earlier work this paper cites.
A.D. Martin et al
2003
Earlier work this paper cites.

Similar

D. de Florian, Phys. Rev. D67
2004
Cited alongside, same era.
See, e.g.: S. D. Bass, Rev. Mod. Phys. 77
2005
Cited alongside, same era.
P. Liebing, AIP Conf. Proc. 915
2006
Cited alongside, same era.
J. Blümlein and H. Böttcher, Nucl. Phys. A721
2006
Cited alongside, same era.
A. Airapetian et al
Original
Cited in the paper.
We add statistical and systematical errors in quadrature as full error correlation matrices are not always available
Cited in the paper.
A Fortran
Original
Cited in the paper.

Then

D. de Florian et al
2006
Later among the works it cites.
A. Adare et al
Original
2007
Later among the works it cites.
D. de Florian et al
2007
Later among the works it cites.
See, e.g., Bass:2004xa for a review of available data. Recent results can be found in: K.V. Dharmawardane et al
2008
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