Heavy quark expansion parameters from lattice NRQCD

TL;DR

This paper calculates heavy quark expansion parameters using lattice NRQCD for heavy-light hadrons and tests HQET relations against mass differences to validate theoretical predictions.

Contribution

It introduces a lattice NRQCD approach to determine heavy quark expansion parameters and compares them with experimental mass differences to assess HQET validity.

Findings

Calculated $_{ ext{pi}}^2$ and $_G^2$ for heavy-light systems

Validated HQET relations through lattice data

Provided insights into heavy quark dynamics on the lattice

Abstract

Using the lattice NRQCD action for heavy quark, we calculate the heavy quark expansion parameters $\mu_{\pi}^2$ and $\mu_G^2$ for heavy-light mesons and heavy-light-light baryons. The results are compared with the mass differences among heavy hadrons to test the validity of HQET relations on the lattice.