Résumé
We report on a search for CP violation in τ±→ KS0π±ντ decays using a data sample of 699fb-1 collected by the Belle experiment at the KEKB electron-positron asymmetric-energy collider. The CP asymmetry is measured in four bins of the invariant mass of the KS0π± system and found to be compatible with zero with a precision of O(10-3) in each mass bin. Limits for the CP violation parameter Im(ηS) are given at the 90% confidence level. These limits are |Im(ηS)|<0.026 or better, depending on the parametrization used to describe the hadronic form factors, and improve upon previous limits by 1 order of magnitude.
| langue originale | Anglais |
|---|---|
| Numéro d'article | 131801 |
| journal | Physical Review Letters |
| Volume | 107 |
| Numéro de publication | 13 |
| Les DOIs | |
| état | Publié - 23 sept. 2011 |
| Modification externe | Oui |
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