# Dynamical flavour dependence of static heavy meson decay constants on the lattice

## TL;DR

This paper investigates how the decay constants of heavy mesons depend on dynamical quark flavors in lattice QCD, revealing a significant flavor dependence that affects quenched estimates.

## Contribution

It introduces a novel analysis of flavor dependence by extrapolating from negative to positive flavor numbers in lattice calculations.

## Key findings

- Significant flavor dependence observed in decay constants.
- Quenched estimates are notably affected by flavor dependence.
- Extrapolation method from negative to positive flavors demonstrated.

## Abstract

We study the dynamical flavour dependence of the lattice estimates of the heavy meson decay constant in the static limit. We perform the analysis by considering negative flavour numbers and by extrapolating the results to positive values. We observe a sizeable flavour dependence which increases the quenched estimates.