, 48:139,
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Improved interpolating fields for hadrons at non-zero momentum

Abstract

We generalise Gaussian/Wuppertal smearing in order to produce non-spherical wave functions. We show that we can achieve a reduction in the noise-to-signal ratio for correlation functions of certain hadrons at non-zero momentum, while at the same time preserving a good projection on the ground state.

Communicated by S. Hands