Direct CP violation in beauty and charm hadron decays

TL;DR

This review discusses recent progress in understanding direct CP violation in non-leptonic beauty and charm hadron decays, highlighting experimental discoveries, theoretical challenges, and implications for fundamental symmetries.

Contribution

It provides a comprehensive overview of recent experimental results and theoretical insights into direct CP violation in b- and c-hadron decays, emphasizing new findings and measurement approaches.

Findings

Large CP asymmetries observed in charmless B decays

First observation of direct CP violation in charm sector

Insights into strong phases and final state interactions

Abstract

Since the discovery of CP violation more than 5 decades ago, this phenomenon is still attracting a lot of interest. Among the many fascinating aspects of this subject, this review is dedicated to direct CP violation in non-leptonic decays. The advances within the last decade have been enormous, driven by the increasingly large samples of b- and c-hadron decays, and have led to very interesting results such as large CP asymmetries in charmless B decays and the observation of direct CP violation in the charm sector. We address the quest for understanding the origin of strong phases, the importance of final state interactions and the relation with CPT symmetry, and different approaches to measure direct CP violation in these decays. The main experimental results and their implications are then discussed.