Improved interpolating fields for hadrons at non-zero momentum

Abstract

We generalize 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.

Comments: 10 pages, 7 figures. Version accepted for publication in EPJ A