Strange-quark Current in the Nucleon from Lattice QCD

Details Strange-quark Current in the Nucleon from Lattice QCD Strange-quark Current in the Nucleon from Lattice QCD

2002-01-21

arxiv.org/abs/hep-ph/0201190v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 9 figures, Presented at EMI 2001

Scientific paper

The contribution of the strange-quark current to the electromagnetic form factors of the nucleon is studied using lattice QCD. The strange current matrix elements from our lattice calculation are analyzed in two different ways, the differential method used in an earlier work by Wilcox and a cumulative method which sums over all current insertion times. The preliminary results of our simulation indicate the importance of high statistics, and that consistent results between the varying analysis methods can be achieved. Although this simulation does not yet yield a number that can be compared to experiment, several criteria useful in assessing the robustness of a signal extracted from a noisy background are presented.

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