The book deals with an introductory idea of Leptonic and semileptonic decay of Heavy-Light mesons. It also highlight the application of a specific QCD potential model in this area of physics. Specifically, it also addresses the application of quantum mechanical perturbation method and explicitly the Dalagarno method of perturbation in this context. The necessity of modification of the model within the constraints of QCD and the model itself is explained and also improved accordingly. Out of the five chapters, the second and third chapters address the leptonic decay of B and D mesons whereas...

The book culminates theoretical and phenomenological studies on mesons, specifically, heavy-flavoured mesons in the light of non-perturbative phenomenological potential model inspired by Nambu strings. Within the potential model approach, higher dimensional non-relativistic Schrödinger equation is used to get the meson wave function which is then further utilized to study static and dynamic properties of heavy flavoured mesons. The book mainly concentrates on the studies of Isgur-Wise Function and its derivatives like slope and curvature of heavy-light pseudo-scalar mesons. Mass being a...

This work tries to bring more familiarity to a new approximation method in Quantum Mechanics(QM) namely the Variationally Improved Perturbation Theory(VIPT).The effectiveness of the method is shown through certain applications within a QCD potential model with success.This very method is quite useful in solving the Schroedinger Equation of QM and thus can be handy for any domain of Physics where this basic equation is involved. We hope that this approach will generate curiosity amongst the fraternity thus making it a step ahead.