1981/01/01 by The Belle Collaboration, A. Kusaka, C. C. Wang +98 · 3 citations
Physics and Astronomy · Psychology · #Black Holes and Theoretical Physics #Mental Health Research Topics #Opinion Dynamics and Social Influence #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex
paper · pdf · doi:10.1103/physrevlett.98.221602
published as Phys.Rev.Lett.98:221602,2007 · 6 pages, 3 figures, to be submitted to PRL; modification to PRL published version, no essential change in the contents
openalex publication_date 1981/01/01 · arxiv created 2007/10/08 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/06/11
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(-1) data sample containing 449 x 10(6) BB pairs. The data was collected on the Upsilon(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 phi2, 68 degrees < phi2 < 95 degrees as the 68.3% confidence interval for the phi2 solution consistent with the standard model (SM). A large SM-disfavored region also remains.