D^0 Mixing

TL;DR

This paper reviews experimental results on D0-D0bar oscillations, showing significant evidence for mixing but no CP violation, and discusses implications for New Physics models.

Contribution

It provides an overview of the latest measurements of mixing parameters and their implications, highlighting the exclusion of no-mixing hypothesis at 6.7 sigma.

Findings

Mixing parameters x and y are measured with high precision.

No evidence of CP violation in D0 system.

Results constrain New Physics models.

Abstract

An overview of selected experimental results in the field of $D^0$-$\bar{D}^0$ oscillations is presented. The average results for the mixing parameters, $x=(0.89\pm{0.26\atop 0.27})%$ and $y=(0.75\pm{0.17\atop 0.18})%$, exclude the no-mixing hypothesis at the level of 6.7 standard deviations. No sign of CP violation in the $D^0$ system is observed. The measurements impose constraints on the parameter space of many New Physics models.