Quantum Correlated Charm at Threshold and Inputs to Extractions of $\gamma$ from $B$ Decays

TL;DR

This paper discusses quantum correlations of D0 and D0bar pairs produced at threshold, their relevance to measuring the CKM angle gamma from B decays, and summarizes recent experimental results from BESIII and CLEO-c.

Contribution

It introduces the physics of quantum-correlated D meson pairs and connects these phenomena to methods for extracting the CKM angle gamma, highlighting recent experimental findings.

Findings

Summarized recent quantum correlation results from BESIII and CLEO-c.

Discussed the impact of quantum correlations on gamma extraction methods.

Highlighted issues in current measurements and analysis techniques.

Abstract

The basic physics of quantum-correlated D0, D0bar pairs produced at threshold via decays of the $\psi(3770)$ is introduced. The connection to extractions of the CKM angle $\gamma$ ($\phi_3$) from $B$ decays is emphasized throughout. Recent quantum correlation results from BESIII and CLEO-c are then summarized before closing with a discussion of selected issues.