CP violation and mixing in the charm sector at Belle, and current HFAG averages

TL;DR

This paper reviews current averages of charm meson mixing and CP violation parameters, presenting recent Belle measurements that improve understanding of these phenomena in the charm sector.

Contribution

It provides new Belle measurements of mixing and CP violation parameters in the charm sector, updating the experimental landscape and comparing with HFAG averages.

Findings

Belle measurements of $x$ and $y$ in $D^0 ightarrow K^0_S o ext{pi+pi-}$

Measurements of $y_{CP}$ and $A_ extGamma$ in various $D^0$ decays

Evidence of direct CP violation in charm decays

Abstract

Current HFAG averages of the mixing and CP violation parameters in the $D^0$ meson system is to be reviewed. We present recent Belle measurements of the mixing parameters $x$ and $y$ using $D^0\rightarrow K^0_S\pi^+\pi^-$, and $y_{CP}$ and $A_\Gamma$ from $D^0\rightarrow h^+h^-$, $D^0\rightarrow K^-\pi^+$, where $h$ denotes $K$ or $\pi$. Belle measurements of direct CP violation in $D^+\rightarrow K^0_S\pi^+$, $D^0\rightarrow h^+h^-$, and $D^+\rightarrow K^0_SK^+$ decays together with $\Delta A^{hh}_{CP}$ are to be presented.