Summary of CP Violation in D -> hh Decays at Belle

TL;DR

This paper reviews measurements of direct CP violation in charm meson decays at Belle, highlighting the small predicted effects in the Standard Model and the potential for new physics to enhance CP violation signals.

Contribution

It provides an overview of recent experimental results on CP violation in charm decays at Belle, including theoretical context and specific decay mode measurements.

Findings

Measurements show no significant CP violation observed.

Results are consistent with Standard Model predictions.

Provides baseline for future searches for new physics.

Abstract

Although CP violation is predicted to be small in the Standard Model, there exists a continuing theoretical interest within the charm sector due to enhancements of CPV through new physics processes. We present an overview of the measurements of direct CP violation in the charm sector at Belle. We give a brief review of the theory of CP violation in charm physics, then discuss recent measurements for the decay modes $D^{+}_{(s)}\rightarrow \phi\pi^{+}$; $D^{0}\rightarrow K^{0}_{S}\pi^{0}, K^{0}_{S}\eta^{(\prime)}$; $D^{+}\rightarrow \pi^{+}\eta^{(\prime)}$; and $D^{+}\rightarrow K^{0}_{S}\pi^{+}$.