Weak decays of heavy hadrons into dynamically generated resonances

TL;DR

This paper reviews recent theoretical work on weak decays of heavy hadrons into interacting hadrons, highlighting how these processes reveal insights into hadron interactions and the nature of resonances through a quark-level perspective and hadronization.

Contribution

It introduces a novel approach to interpret weak decays into hadrons, connecting quark-level mechanisms with observed resonances and hadron interactions.

Findings

Enhanced understanding of hadron resonance formation

Method to connect quark processes with experimental hadron states

Insights into the nature of hadronic resonances

Abstract

In this review we give a perspective of the theoretical work done recently on the interpretation of results from $B$, $D$, $\Lambda_b$, $\Lambda_c$ weak decays into final states that contain interacting hadrons, and how it is possible to obtain additional valuable information that is increasing our understanding of hadron interactions and the nature of many hadronic resonances. The novelty of these processes is that one begins with a clean picture at the quark level which allows one to select the basic mechanisms by means of which the process proceeds. Finally, one has a final state described in terms of quarks. To make contact with the experiments, where mesons and baryons are observed, one must hadronize, creating pairs of $q \bar q$ and writing the new states in terms of mesons and baryons. This concludes the primary hadron production in these processes. After that, the interaction of these hadrons takes place, offering a rich spectrum of resonances and special features from where it is possible to learn much about the interaction of these hadrons and the nature of many resonances in terms of the components of their wave functions.