From Spectroscopy to the Strong Coupling Constant with Heavy Wilson Quarks

TL;DR

This paper uses lattice QCD simulations with Wilson fermions to calculate heavy meson spectra and derive the strong coupling constant, comparing results with other lattice and experimental data.

Contribution

It provides new lattice QCD calculations of P-wave meson masses and the strong coupling constant using Wilson quarks with both dynamical and quenched configurations.

Findings

Computed charm and charmonium spectra consistent with experimental data

Derived the strong coupling constant from lattice results

Compared results with other lattice and experimental findings

Abstract

In this work we present lattice calculations of the masses of P-wave mesons using Monte Carlo simulations. Our valence fermions are defined by the Wilson action. Our gauge fields are generated with both dynamical staggered fermions at a lattice coupling $\beta\equiv 6/g^2=5.6$ for sea quark masses of $am_q=0.010$ and 0.025, and in the quenched approximation at $\beta=6.0$. We present results for charm and charmonium spectroscopy and use them to compute the strong coupling constant $\alpha_s$. We compare our results to those of other recent lattice calculations and experiments.