Improved Currents for Heavy Quarks

TL;DR

This paper examines lattice artifacts affecting heavy quark hadron matrix elements, analyzing their relation to the $1/m_Q$ expansion and implications for calculating decay constants and form factors.

Contribution

It provides a detailed analysis of lattice artifacts in heavy quark calculations and explores their impact on physical observables.

Findings

Lattice artifacts influence heavy-light decay constant calculations.

Interrelations between lattice artifacts and $1/m_Q$ expansion are clarified.

Implications for semi-leptonic form factor computations are discussed.

Abstract

We discuss lattice artifacts for matrix elements of hadrons containing one or more heavy quark. In particular, we analyze interrelations between lattice artifacts and the $1/m_Q$ expansion. The implications for calculations of heavy-light decay constants and of semi-leptonic form factors are discussed.