Measurement of the CKM angle φ1 in B0→D¯ (*)0h0 , D¯ 0→KS0π+π- decays with time-dependent binned Dalitz plot analysis
Abstract
We report a measurement of the C P -violation parameter φ1 obtained in a time-dependent analysis of B0→D¯ (*)0h0 decays followed by D¯ 0 →KS0π+π- decay. A model-independent measurement is performed using the binned Dalitz plot technique. The measured value is φ1=11.7 °±7.8 °(stat ) ±2.1 °(syst ) . Treating sin 2 φ1 and cos 2 φ1 as independent parameters, we obtain sin 2 φ1 =0.43 ±0.27 (stat ) ±0.08 (syst ) and cos 2 φ1 =1.06 ±0.33 (stat)-0.15 +0.21(syst ) . The results are obtained with a full data sample of 772 ×1 06B B ¯ pairs collected near the ϒ (4 S ) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider.
- Publication:
-
Physical Review D
- Pub Date:
- September 2016
- DOI:
- 10.1103/PhysRevD.94.052004
- Bibcode:
- 2016PhRvD..94e2004V