Mass Spectra and Decay Constants of Heavy-Light Mesons: A Case Study of QCD Sum Rules and Quark Model

TL;DR

This paper compares QCD sum rules and quark models to calculate the mass spectra and decay constants of heavy-light mesons, achieving results consistent with experimental data.

Contribution

It provides a comparative analysis of two theoretical approaches for heavy-light meson properties using harmonic oscillator wave functions and interpolating currents.

Findings

Results agree well with experimental data

QCD sum rule and quark model methods are effective

Good consistency with previous theoretical studies

Abstract

In this paper we visited mass spectra and decay constants of pseudoscalar and vector heavy-light mesons ($B$, $B_s$, $D$ and $D_S$) in the framework of QCD sum rule and quark model. The harmonic oscillator wave function was used in quark model while a simple interpolating current was used in QCD sum rule calculation. We obtained good results in accordance with the available experimental data and theoretical studies.