Importance of Non-Perturbative QCD Parameters for Bottom Mesons

TL;DR

This paper emphasizes the significance of non-perturbative QCD parameters in accurately predicting bottom meson masses and isospin splittings, using heavy quark effective theory and fitting parameters to experimental data.

Contribution

It investigates the impact of non-perturbative QCD parameters on bottom meson mass predictions within heavy quark effective theory, providing improved mass estimates and analyzing hyperfine splittings.

Findings

Calculated bottom meson masses match experimental data.

Identified optimal non-perturbative QCD parameter values.

Analyzed hyperfine splitting with respect to spin and flavor symmetries.

Abstract

The importance of non-perturbative Quantum Chromodynamics [QCD] parameters is discussed in context to the predicting power for bottom meson masses and isospin splitting. In the framework of heavy quark effective theory, the work presented here focuses on the different allowed values of the two non perturbative QCD parameters used in heavy quark effective theory formula and using the best fitted parameter, masses of the excited bottom meson states in JP=(1/2)+ doublet in strange as well as non-strange sector are calculated here. The calculated masses are found to be matching well with experiments and other phenomenological models. The mass and hyperfine splitting has also been analyzed for both strange and non-strange heavy mesons with respect to spin and flavor symmetries.