Parton distributions from the lattice
Preprint
- 17 January 2005
Abstract
I review the current status of lattice calculations for two selected observables related to nucleon structure: the second moment of the unpolarized parton distribution, (u-d), and the first moment of the polarized parton distribution, the non-singlet axial coupling gA. The major challenge is the requirement to extract them sufficiently close to the chiral limit. In the former case, there still remains a puzzling disagreement between lattice data and experiment. For the latter quantity, however, we may be close to obtaining its value from the lattice in the immediate future.Keywords
All Related Versions
- Version 1, 2005-01-17, ArXiv
- Published version: Nuclear Physics A, 755, 333.
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