Measurement of CP Asymmetry in a Time-Dependent Dalitz Analysis of B^0 \to (ρπ)^0 and a Constraint on the Quark Mixing Matrix Angle ϕ_2
| dc.creator | The Belle Collaboration | |
| dc.creator | Kusaka, A. | |
| dc.creator | Wang, C. C. | |
| dc.creator | Ishino, H. | |
| dc.date | 2007-01-10 | |
| dc.date | 2007-10-08 | |
| dc.date.accessioned | 2026-07-07T11:01:52Z | |
| dc.date.available | 2026-07-07T11:01:52Z | |
| dc.description | We present a measurement of CP asymmetry using a time-dependent Dalitz plot analysis of B0 --> pi+pi-pi0 decays based on a 414/fb data sample containing 449M BB pairs. The data was collected on the $Υ$(4S) resonance with the Belle detector at the KEKB asymmetric energy e+e- collider. Combining our analysis with information on charged B decay modes, we perform a full Dalitz and isospin analysis and obtain a constraint on the CKM angle $ϕ_2$, 68 deg. < $ϕ_2$ < 95 deg. as the 68.3% confidence interval for the $ϕ_2$ solution consistent with the standard model (SM). A large SM-disfavored region also remains. | |
| dc.description | 6 pages, 3 figures, to be submitted to PRL; modification to PRL published version, no essential change in the contents | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0701015 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0701015 | |
| dc.identifier | Phys.Rev.Lett.98:221602,2007 | |
| dc.identifier | doi:10.1103/PhysRevLett.98.221602 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/188082 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Measurement of CP Asymmetry in a Time-Dependent Dalitz Analysis of B^0 \to (ρπ)^0 and a Constraint on the Quark Mixing Matrix Angle ϕ_2 | |
| dc.type | text |