Improved method for calculating nucleon strangeness

TL;DR

This paper introduces a new lattice calculation technique that reduces statistical errors in determining the nucleon's strange quark content by focusing on the condensate near the propagation region.

Contribution

A novel method that minimizes statistical noise in lattice QCD calculations of nucleon strangeness by localizing the condensate measurement.

Findings

Significant reduction in statistical error achieved

Improved accuracy in nucleon strangeness calculations

Method applicable to other lattice QCD matrix elements

Abstract

The strange quark content of the nucleon, as well as other matrix elements, can be calculated on the lattice by examining correlations between the nucleon propagator and the quark condensate. The largest contribution to statistical error comes from fluctuations in the condensate far from the propagation region that contribute only noise. We will report on a technique for considering only the condensate near the propagation region, significantly reducing the statistical error.