Search for CP Violation in Charm at $e^+e^-$ colliders

TL;DR

This paper reviews searches for direct CP violation in charm meson decays conducted by BaBar and Belle using $e^+e^-$ collider data, finding no evidence of CP violation.

Contribution

It presents the latest experimental results from BaBar and Belle on CP violation in charm decays, employing various analysis techniques.

Findings

No evidence of CP violation was observed.

Analysis of decay asymmetries across phase space.

Results set constraints on CP violation in charm decays.

Abstract

In this proceeding, I discuss results from the BaBar and Belle collaborations for searches of direct CP violation in the singly Cabibbo-suppressed decay $\D^\pm\to K^+K^-\pi^\pm$ from $e^+e^-$ annihilation data collected at a center-of-mass energy at or just below the \Y4S resonance. The Belle collaboration measures the CP asymmetry as a function of the production angle of the $D^\pm$ meson in the quasi two-body $\D^\pm\to\phi\pi^\pm$ decay. The Babar experiment studies the entire phase-space with model-independent and model-dependent Dalitz plot analysis techniques to search for CP-violating asymmetries in the various intermediate states, in addition to a phase-space integrated measurement as a function of the production angle. No evidence for CP violation is reported from either experiment.