Masses and Decay constants of Heavy Flavour mesons in perturbative approach

TL;DR

This paper calculates the masses and decay constants of heavy flavor mesons using perturbative methods in a QCD-inspired potential model, comparing different approaches and with experimental data.

Contribution

It introduces the use of Dalgarno's and VIPT perturbation theories with Cornell potential to compute meson properties, comparing methods and experimental results.

Findings

Both perturbation methods yield results consistent with experimental data.

Using different parent potentials affects the calculated meson properties.

The approach provides a reliable framework for studying heavy meson characteristics.

Abstract

Determination of the wave-function is very essential in the calculation of static and dynamic properties like masses,decay constants of pseudo-scalar mesons and masses of vector mesons.We use Dalgarno's perturbation theory and Variation-ally Improved Perturbation Theory (VIPT) to solve Schrodinger equation in a QCD inspired potential model wuth Cornell potential,which consists linear and coulomb potential.We use both the options like Columbic parent firstly and then linear parent while using the VIPT method. Comparison of both these methods and also with experimental results are done in the calculation of masses and decay constants.