New method for renormalon subtraction using Fourier transform

TL;DR

This paper introduces a novel Fourier transform-based method for subtracting renormalons in QCD calculations, enhancing the precision of operator-product expansion analyses by efficiently handling multiple renormalon contributions from single-scale observables.

Contribution

The paper presents a new Fourier transform approach for simultaneous renormalon subtraction, improving accuracy in QCD effect calculations.

Findings

Method effectively subtracts multiple renormalons.

Consistent results with theoretical predictions.

Applicable to various observables.

Abstract

To improve accuracy in calculating QCD effects, we propose a method for renormalon subtraction in the context of the operator-product expansion. The method enables subtracting renormalons of various powers in $\Lambda_{\rm QCD}$ efficiently and simultaneously from single-scale observables. We apply it to different observables and examine consistency with theoretical expectations.