Hunting for the strangeness content of the nucleon
High Energy Physics - Lattice
2009-02-09 v2
Abstract
We present results for the strangeness contribution to the nucleon, <N|ss|N>, and to the spin of the nucleon, Delta s. By combining several variance reduction techniques for all-to-all propagators we are able to obtain gains in terms of computer time of factors of 25-30 for the disconnected loop that is needed within the calculation of Delta s, relative to the standard approach of just employing time partitioning/dilution. For <N|ss|n>, the error is dominated by the gauge noise.
Keywords
Cite
@article{arxiv.0811.0807,
title = {Hunting for the strangeness content of the nucleon},
author = {Gunnar Bali and Sara Collins and Andreas Schäfer},
journal= {arXiv preprint arXiv:0811.0807},
year = {2009}
}
Comments
7 pages, talk presented at XXVI International Symposium on Lattice Field Theory (Lattice 2008), July 14-19, 2008, Williamsburg, Virgina, USA, v2: acknowledgments corrected. Otherwise identical