# Low Energy Aspects of Heavy Meson Decays

## TL;DR

This paper explores low energy phenomena in heavy meson decays involving at least one heavy meson, using heavy-light chiral perturbation theory and a chiral quark model to estimate non-factorizable effects.

## Contribution

It provides a detailed analysis of heavy meson decay processes in the heavy quark limit, including estimates of coefficients for suppressed chiral Lagrangian terms beyond factorization.

## Key findings

- Estimation of $1/N_c$ suppressed chiral Lagrangian coefficients
- Application of heavy-light chiral perturbation theory to decay processes
- Insights into non-factorizable contributions in heavy meson decays

## Abstract

I discuss low energy aspects of heavy meson decays, where there is at least one heavy meson in the final state. Examples are $B -\bar{B}$ mixing, $B \to D \bar{D}$, $B \to D \eta'$, and $B \to D \gamma$. %and $B \to D W $ (Isgur-Wise function). The analysis is performed in the heavy quark limit within heavy-light chiral perturbation theory. Coefficients of $1/N_c$ suppressed chiral Lagrangian terms (beyond factorization) have been estimated by means of a heavy-light chiral quark model.