# The rho meson decay constant using a tadpole-improved action

## TL;DR

This paper calculates the rho meson decay constant and renormalization factor using a tadpole-improved lattice action, demonstrating improved accuracy over Wilson action calculations in quenched lattice QCD.

## Contribution

It introduces a tadpole-improved action corrected at the classical level to O(a^2) for more precise decay constant computations in lattice QCD.

## Key findings

- Improved decay constant results compared to Wilson action
- Effective suppression of discretization errors
- Validation of tadpole improvement in quenched approximation

## Abstract

The rho meson decay constant and the associated renormalization factor are computed in the quenched approximation on coarse lattices using a tadpole-improved action which is corrected at the classical level to O(a^2). The improvement is displayed by comparing to Wilson action calculations.