A lattice study of the spin structure of the Lambda hyperon
High Energy Physics - Lattice
2008-11-26 v1 High Energy Physics - Phenomenology
Abstract
The internal spin structure of the Lambda is of special importance for the understanding of the spin structure of hadrons in general. The comparison between the nucleon and Lambda allows for a test of the relevant flavour-symmetry breaking effects. Using nonperturbatively O(a) improved Wilson fermions in the quenched approximation we have calculated the first moments of the unpolarised, longitudinally polarised and transversity quark distribution functions in the Lambda. The results indicate that flavour symmetry breaking has little effect on the internal spin structure, in accordance with model based expectations.
Keywords
Cite
@article{arxiv.hep-lat/0208017,
title = {A lattice study of the spin structure of the Lambda hyperon},
author = {M. Göckeler and R. Horsley and D. Pleiter and P. E. L. Rakow and S. Schaefer and A. Schäfer and G. Schierholz},
journal= {arXiv preprint arXiv:hep-lat/0208017},
year = {2008}
}
Comments
14 pages, 2 figures