Mixing and $CP$ violation in the charm system

TL;DR

This paper reviews recent experimental progress in charm meson mixing and $CP$ violation, discussing their implications for the Standard Model and future prospects for theory and experiment.

Contribution

It provides a comprehensive overview of current measurements and assesses their consistency with theoretical predictions, highlighting future experimental and theoretical developments.

Findings

Charm mixing is well established.

$CP$ violation has been observed in $D^0$ decays.

Future experimental precision will improve understanding of charm physics.

Abstract

In recent years charm physics has undergone a renaissance, one which has been catalysed by an unexpected and impressive set of experimental results from the $B$-factories, the Tevatron and LHCb. The existence of $D^0\bar{D}{}^0$ oscillations is now well established, and the recent discovery of $CP$ violation in $D^0$ decays has further renewed interest in the charm sector. In this article we review the current status of charm-mixing and $CP$-violation measurements, and assess their agreement with theoretical predictions within the Standard Model and beyond. We look forward to the great improvements in experimental precision that can be expected over the coming two decades, and the prospects for corresponding advances in theoretical understanding.