Towards selecting a finite-range regularization scale

TL;DR

This paper explores a nonperturbative method to determine the optimal finite-range regularization scale in lattice QCD, aiming to improve chiral extrapolations without relying on phenomenological input.

Contribution

It introduces a novel procedure to select the FRR scale based solely on lattice results, removing dependence on phenomenological assumptions.

Findings

Proposed a nonperturbative approach to determine FRR scale.

Demonstrated potential for improved chiral extrapolations.

Lays groundwork for more objective FRR scale selection.

Abstract

Extensive studies have demonstrated that finite-range regularization (FRR) offers significantly improved chiral extrapolations for lattice QCD. These studies have typically relied on selecting the finite-regularization scale based upon phenomenological input. Here we report on a preliminary investigation of a procedure to determine a preferred range of FRR scale based on nonperturbative lattice results -- without any phenomenological prejudice.