# ICHEP2012

Jul 4 – 11, 2012
Melbourne Convention and Exhibition Centre
Australia/Melbourne timezone
ICHEP2012 - 36th International Conference for High Energy Physics

## Charm mixing at Belle

Jul 5, 2012, 5:15 PM
15m
Room 220 (Melbourne Convention and Exhibition Centre)

### Room 220

#### Melbourne Convention and Exhibition Centre

Melbourne Australia
Parallel Sessions Track 7. CP Violation, CKM, Rare Decays, Meson Spectroscopy

### Speaker

Mr Tao Peng (University of Science & Technology of China)

### Description

We present an updated measurement of the mixing parameter $y_{CP}$ in the decays $D^0 \to K^+ K^-$ and $D^0 \to \pi^+ \pi^-$. The results are obtained from the full data set of 1 ab${}^{-1}$ collected with the Belle detector at the KEKB asymmetric-energy $e^+ e^-$ collider. We report a measurement of $D^0 - \bar D^0$ mixing in $D^0 \to K^0_S \pi^+ \pi^-$ decays using a time-dependent Dalitz plot analysis. The results are obtained from a large data sample collected on the $\Upsilon(4S)$ and $\Upsilon(5S)$ resonances with the Belle detector at the KEKB asymmetric-energy $e^+ e^-$ collider.

### Primary author

Mr Tao Peng (University of Science & Technology of China)

 Slides