Improved interpolating fields for hadrons at non-zero momentum

TL;DR

This paper introduces a generalized smearing technique to create non-spherical wave functions, reducing noise in hadron correlation functions at non-zero momentum while maintaining ground state projection.

Contribution

It presents a novel generalization of Gaussian/Wuppertal smearing to improve signal quality for hadrons with non-zero momentum.

Findings

Reduced noise-to-signal ratio for certain hadrons at non-zero momentum

Preserved good projection on the ground state

Enhanced effectiveness of hadron correlation measurements

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.