Résumé
We report results on time-dependent CP asymmetries in B→D *π± decays based on a data sample containing 657×106 BB̄ pairs collected with the Belle detector at the KEKB asymmetric-energy e+e- collider at the Υ(4S) resonance. We use a partial reconstruction technique, wherein signal B→D* π± events are identified using information only from the fast pion from the B decay and the slow pion from the subsequent decay of the D*, where the former (latter) corresponds to D*+(D*-) final states. We obtain CP violation parameters S+=+0.061±0. 018(stat)±0.012(syst) and S-=+0.031±0.019(stat) ±0.015(syst).
| langue originale | Anglais |
|---|---|
| Numéro d'article | 021101 |
| journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
| Volume | 84 |
| Numéro de publication | 2 |
| Les DOIs | |
| état | Publié - 5 juil. 2011 |
| Modification externe | Oui |
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