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

Halil Mutuk

doi:10.1155/2018/8095653

Abstract

We visited mass spectra and decay constants of pseudoscalar and vector heavy-light mesons (B, Bs, D, and DS) 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.

Highlights

The ultimate objective of particle physics is to investigate and examine the structure and the origin of matter
We studied ground states since they are accessible in the framework of Quantum Chromodynamics (QCD) Sum Rules
To obtain physical observables from QCD sum rules, a correlator of two hadronic currents which is defined as follows

Summary

Introduction

The ultimate objective of particle physics is to investigate and examine the structure and the origin of matter. The interaction of quarks is described by QCD, which is part of the Standard Model of particle physics. Light quark physics is a key topic to understand the nature of QCD They can be thought of a probe of the strong interactions by means of nonperturbative effects [28]. B factories gave a substantial contribution to particle physics such as first observation of CP violation apart from the kaon, measurements of CKM matrix elements, measurements of purely leptonic B meson decays, and searches for new physics. We obtained mass spectrum and decay constants of the D and B mesons via QCD Sum Rule and a Quark Model potential. We studied ground states since they are accessible in the framework of QCD Sum Rules

QCD Sum Rule Formalism

Quark Model

Elaboration of the Problem

Summary and Conclusions