First observation of CP violation and improved measurement of the branching fraction and polarization of B-0 -> D*(+) D*(-) decays
- Title
- First observation of CP violation and improved measurement of the branching fraction and polarization of B-0 -> D*(+) D*(-) decays
- Author
- 천병구
- Issue Date
- 2012-10
- Publisher
- American Physical Society
- Citation
- Physical Review D: Particles Fields Gravitation and Cosmology, 2012, 86(7), p,071103(R)
- Abstract
- We report the measurement of the branching fraction, the polarization, and the parameters of the time-dependent CP violation in B0→D*+D*− decays using a data sample of 772×106BB pairs, collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e− collider. We obtain a branching fraction of B=(7.82±0.38±0.63)×10−4, a CP-odd fraction of R⊥=0.138±0.024±0.006 and, additionally, a fraction of the longitudinal component in the transversity base of R0=0.624±0.029±0.011. The measured values of the parameters of the CP violation are SD*+D*−=−0.79±0.13±0.03 and AD*+D*−=0.15±0.08±0.04.
- URI
- https://journals.aps.org/prd/abstract/10.1103/PhysRevD.86.071103https://repository.hanyang.ac.kr/handle/20.500.11754/73067
- ISSN
- 1550-7998; 1550-2368
- DOI
- 10.1103/PhysRevD.86.071103
- Appears in Collections:
- COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
- Files in This Item:
- First observation of CP violation and improved measurement of the branching fraction and polarization of B-0 -> D(+) D(-) decays.pdfDownload
- Export
- RIS (EndNote)
- XLS (Excel)
- XML